Tyler was looking through magazines. He'd gone to the corner shop with Carmen and Jody. As Carmen leafed through fashion magazines and Jody was buying chocolate biscuits, Tyler had seen a headline on one.

'Eight Page Special on Klaus Grunewald: Monster of the Franks'. He felt as if he had to read it. It was some women's magazine that May-Li brought sometimes. When he got back, he opened it in his room, notebook at the ready. He needed to see if there was anything that could help.

He began.

Real World Magazine

With Klaus Grunewald's re-arrest, parents all over Western Europe were relieved. Grunewald was on the run for three and a half days before he was spotted in a small village in Brittany. His victim, a fifteen-year-old boy, had been left for dead, but miraculously was found alive despite Grunewald having buried him. Now Real World looks back at his other murders, with crime specialist Leonard Eckstein narrating.

Leonard Eckstein says:

'What we have to realise is that most killers do not travel as extensively as Grunewald.

'We have truck drivers as serial killers, the majority being in the United States, but for a killer like this to do undetected, with no criminal record, is basically unheard of. The ages of his young victims tie in with the accusations from his orphanage in the 1990s.

'What happens in childhood reflects deeply on a person during their adult years. In some serial killers, these can include bed-wetting, starting fires, injuries to the head, whether deliberately or accidental – some were abused themselves.

'Grunewald displayed all of the traits I have described. He was a bed-wetter even before he went to the orphanage and was suspected of having started a fire at his school in 1995.'

Convicted of nine murders in 2014 and suspected of up to eight more across Europe, we look at crimes that police were unable to charge Grunewald with, although he has remained a suspect in some of them.

Regis Labelle, murdered in Nesten, Belgium, on 11th December 2001. Going to a friend's house just 300 yards away, his body was found in Walendreef, less than a five-minute drive away. He had been stabbed, most likely with a screwdriver. Guilty? 'Unlikely, as this was a different MO.'

Gerben Vann, murdered in Wolenwijk, Amsterdam, on 22nd June 2004. Found in a canal, with the contents of his schoolbag scattered nearby. Guilty? 'The MO is completely different. I'd say since he disappeared down a hard-to-find road, he was killed by someone who knew the area.'

Walter Schoonraad, killed in Lellig, Luxembourg on 21st July 2004. He was last seen talking to someone in a white van and his body found in the nearby forest. Guilty? 'While I and indeed, many others in law enforcement, believed Grunewald was guilty due to his habit of smuggling things in and out of Luxembourg, with this town being close to both the route and German border, in 2015 the DNA found at the crime scene was linked to a man already in prison.'

Friedhold Erkens, kidnapped from Uddel, Netherlands, on 4th December 2005. Going to his job at a barber's, he vanished on a 750 yard walk. His strangled body was found by the road a few miles south-east during the early morning of 6th December. Guilty? 'Personally I think this murder was committed by someone who knew the area and wanted the body to be found quickly as there was no attempt to hide Friedhold.'

Eric Fairclough, abducted from outside a wood in Canterbury, UK on 12th February 2011. Eric's body was found in a potter's field near Canterbury five days later. Guilty? 'While we did think that there was the possibility of Grunewald's involvement in Eric's murder, DNA testing in 2014 has proven otherwise and the culprit is now in prison.'

Aidan English, abducted from the New Forest, UK, on 21st August 2011. His body was found beaten and strangled a month later. Guilty? 'I am uncertain as of present. While the method of death matches Grunewald's MO, the body was not transported from the crime scene. Aidan is likely to have been murdered where he was found, since no fibres from seating or matting was found on him, unlike the other victims. In addition, the brook where he was found, despite being 500 yards from where Grunewald delivered to, is hard to get to from the farmhouse as there is no connecting path. Besides, if the witnesses were right in saying they say Grunewald leave the farm on the right day, he was going in a different direction and they did not see him as they came back. But we cannot rule him out completely in this instance. I would say there is a 50-50 chance that he may be involved.'

Birger Briefman, kidnapped from Elspeet, Netherlands, on 1st June 2012. He was helping build a treehouse when his friends went home at 5pm. His body was found near Termunten, 140 miles away, in November 2013. His town was the next one over from Friedhold's murder. Guilty? 'Despite the gap between Torvald Gunvaldsson and the Versailles abduction, I do not believe Grunewald was responsible for any abductions between these events. Birger was buried and Grunewald did not bury victims until after his escape from prison and even then his victim was buried alive.'

The boy who had been taken in Paris lived at the same children's home as the one Aidan had come from, albeit at different times.

There was a copy of an article from a previous edition. It was when Joel's parents were trying to get closure.

What Happened to Our Son? Missing Boy's Parents Speak Out

On the fifth anniversary of his disappearance, Millie Wedekind, 43, wonders what happened to her wonderful boy...

Joel was a kind child. He always put others before himself; when he was seven, he told me that he didn't want to have the latest gaming station for Christmas and that it should go to his brother Paul, then 6, instead. Paul had broken his leg two months earlier and had been in bed a lot.

That day is one I tend not to think about. I prefer to think of Joel as being a happy, kind boy enjoying himself. But on 14th June 2006, my son left the house to go to school at 8.20am. He would have gone with Paul, but Paul was sick that day. I took my daughter, Funanya, then 10, to school shortly after.

I don't actually remember the last thing I said to Joel. It might have been when I called goodnight the night before as I went up to bed when I came back from work. It just breaks my heart that I don't remember the last time we interacted.

When Joel didn't come home by 4.30pm, I was getting nervous. I rang his phone and didn't get an answer. I told my husband Jacob, now 46, that Joel hadn't come home and he went out in the car, looking round and calling. I rang all of Joel's friends.

One of them told me that they'd seen Joel at the Wednesday market a few blocks from our house. This was at 12.30pm. Joel had the habit of bunking off on days he didn't have to go to school with Paul. I should have stopped it, but I just didn't. I really don't know why. I wish I'd told his teachers so they might have dealt with it.

We called the police at 5pm. I was now really worried and frantic. They told me to wait and be patient. Teenagers went missing all the time, they told us. But they still asked a lot of questions. Did he have a girlfriend? Was he doing well at school? Where did he normally go when he skipped school?

I knew they suspected he'd run away. I don't blame them; he had obviously skipped school and had bad grades. But I knew that was ridiculous.

That whole night is a complete blur. I remember waiting up for him, but he never came.

A few days after he vanished, police said they were changing his disappearance to 'involuntary'.

They said Joel had been reported going into a white van by the market. The witness didn't know if Joel climbed or was dragged in. But the witness had told police the day after Joel went missing.

Why weren't we told?

Ten days after Joel vanished, we heard about Drika Slootmaekers. Police told us that she was walking along the Lozingskanaal when she was grabbed by a man in a white van. The similarity of the van to the one the witness had seen made local police suspect a connection.

I couldn't bear to think of my little boy at the hands of a monster.

The next few days were spent in my room or Joel's room, wondering.

Is he alive? Is he safe?

But on 7th July, police found Drika alive in a house in Dronten. While I was very pleased for her family, I felt a twang of jealously.

My boy was still missing.

Police told us they weren't ruling out a link, but they eventually told us there was 'unlikely to be any connection'.

However, Drika's case meant Joel was now in national newspapers. When she had been missing, our local newspaper had suggested to a national one that these cases could be connected. I still have articles filed away in my room.

As Joel was a sixteen-year-old black boy who had skipped school, I had serious doubts that he would have been even mentioned in the press as a suspected kidnapping. But it was and for most of that summer he was in several articles, a number of which were front page.

Over three thousand people searched fields in Barneveld and beyond. I was thankful for all the support, but that nagging question hung over me.

Five years on, police still haven't found him. Every morning he is the first thing I think of when I wake up. I dream of the day we will be reunited. Because whether on Earth or in Heaven, I know we will.

Lower Saxony, Germany

The police were fed up of him, to be plain.

Now they were looking through evidence in files to see if this latest crime could unlock anything about other crimes.

One of the junior officers sighed as he looked at the file on what had been found at Grunewald's home.

Grunewald had buried some of the boys' belongings in his garden. But some he had kept in his room, in a small cardboard box. The police had used the evidence inside to determine who he had taken.

They found EK's front door key, JVH's bicycle pump, MR's emblem torn from his school jacket.

In a sheet of brown paper they discovered DF's earring and GS' neatly folded football shirt. JW's trainers were strewn around, one on its side. KC's woggle and his badges were on top of FB's book, written in Spanish. TG's clarinet took up most of the box, the reed broken long ago.

Held together with a paper clip were articles in German, Polish, French and Dutch, all of the missing boys and the searches.

One photo of KC in his Scout uniform, a cheeky smile taking up most of his face. A missing poster of JW lay on top of an article detailing the discovery of EK's body.

Police had been able to charge him with the murders of JW, DF and JVH and FB, even though they were still missing when he was arrested. The evidence they found was enough.

They had repeatedly asked where those four boys were. Maybe if he complied, he'd get a reduced sentence. They tried bargaining with him. But it didn't work. He was keeping his last secret from them.

But the bodies were found eventually so they didn't ask him anymore.

One of his friends from a tavern in Dresden said that Grunewald had discussed cases of missing children with him.

The unnamed friend said, "I was talking about Gerald Salzwedel, because the body was found relatively close to Dresden. Grunewald told me, 'It's tragic but it's not as tragic as the other ones.' And he just rattled off a list of names."

The friend had said that he had mentioned Joel Wedekind and Aidan English, who were at the time fairly unknown in Germany. He had also talked extensively about Maurice Rey's abduction, giving away information not revealed to the public.

But now Grunewald was ready to talk to police. They had decided to talk to him and he couldn't try to refuse; if he had, they would assume he was guilty of the crimes they were discussing.

He sat across from an officer, who pushed a photo towards him. A young boy, maybe a year younger than Gerald Salzwedel.

The officer said what Grunewald was thinking. "Gerben Vann, murdered in an Amsterdam district, in June 2004. His body was found in a canal and belongings scattered around," he lay back on his chair as Grunewald peered at the picture, pretending to examine it, "younger than your victims, but fits everything."

Grunewald smiled slightly, eyes locking with the officer as he handed it to him, "I never drowned any victims."

That was all Grunewald would say on the topic, as the officer tried coxing him. Then he sighed and handed over another.

This one made Grunewald grin inwardly. The long hair, frown, stare. The British boy.

Grunewald liked playing with the law. He didn't say anything.

After the third photo and giving little information, the officer sighed and, standing up, called for a guard to take Grunewald back to the cell.

In Ashdene Ridge, Tyler was walking past Bailey's room when he noticed the light was on. He could hear Bailey talking. As Tyler listened, he heard Mike.

"Mike, this – does this mean I'm gay?" Bailey asked, in an almost child-like whimper. It sounded as if he may cry.

Mike was reassuring him, soothingly, "It doesn't, Bailey. Trust me."

Tyler felt he should move on, but he couldn't seem to walk.

Bailey asked Mike, softly this time, "Mike, do it – am I still a virgin?"

Mike told him, almost fiercely, "Bailey, whatever anyone's said to you, you are a virgin. Don't listen to what the other boys on the team say."

Tyler walked past back to his room. His mind racing as he thought about Grunewald.

Grunewald had felt weak as a child. That had caused him to be angry and when he abducted the boys, Tyler wouldn't be surprised if Grunewald saw the other children in them. To Grunewald, he wouldn't be simply hurting children; he would be hurting his bullies.

It seemed to be a horrid pattern in killers. Tyler read several articles from online magazine archives and books from the library and documentaries.

He learnt about children who wet the bed and started fires, learnt about children abused by their parents or by older relatives or trusted adults.

He read about those who moved between jobs and those who kept steady jobs. He learnt about wife-beaters and those who hid their feelings from their families, sometimes only coming to light when they were caught.

Tyler read on those who were bullied, those who were bullies and those who kept to themselves.

He read about men who targeted children, men who targeted women, men who targeted men. He read about women who poisoned their families, women who helped their spouses kill women and children.

He read about those who hit close to home and those who travelled long distances as truck-drivers or homeless.

He read about those who had been arrested before their spree and those that had no record.

He read about those who took chances and those who chose their victims in advance. He read about killers who broke into people's houses, killers who picked up hitch-hikers, those who pretended to be police or security guards.

Those who discarded victims by the road or in fields, those who buried victims in their garden.

It was scary, but Tyler thought he had to, to find how Grunewald worked and if he'd killed Aidan.

He started looking in the magazine again. This one was from someone connected to Grunewald's Scottish victim.

Kevin Cunningham's cousin Morgan, 19, has revealed exactly what happened when the Kinghorn boy disappeared.

I was in Auchertool when I heard Kevin was missing. My aunt, Jennifer Cunningham, had called Mum at 9pm to say Kevin was missing. Mum had come into my room and told me.

I was only eleven and didn't understand. I knew about stranger danger and I thought Kevin was a smart boy. But I didn't know how bad it was.

Mum tried to hide the news from me and my sister, then 9. But I saw a snippet of searchers in the fields near Kinghorn. I also heard a helicopter above my house on Christmas Eve.

Christmas was a solemn occasion. My parents gave us our presents, but we didn't feel like opening them. I wanted Kevin back.

On Boxing Day, Mum brought us into the living room and told us that Kevin's body had been found across the Forth. I wept. I thought maybe he'd got lost, somewhere, cold and trying to find home. But now I knew he was dead, there was no other option – someone killed him.

It wasn't until some years later that I knew what had happened.

Even then, it was heartbreaking to think of my little cousin suffering like that.

In 2013 I came home from work at a garage and Dad was in the hall.

"They found someone who may have killed Kevin." He told me.

I learnt that Klaus Grunewald had delivered to a country club 20 miles north of Kinghorn on that day. He had left the club at 3.35pm and drove south. He had brought petrol at a garage near Loch Leven before midnight the next day. He took a ferry to Hamburg at twenty past three on Christmas Eve. It seemed to fit.

I was relieved when I heard Grunewald was convicted. Dad said, "They should lock him up and throw away the key!"

I was furious when he escaped in August. When I heard he was caught everything seemed to rush back. I couldn't keep it in. I kept crying for hours at a time.

I visited Kevin's grave whenever I feel upset. I just weep when I think of the wonderful boy that the world lost. I will make him proud.

Lower Saxony

An officer read the email. It was translated from English and it was slightly shaky. Still, he knew what Scotland Yard wanted.

They wanted Grunewald to come to England to be charged for Bailey's abduction, assault and attempted murder.

They hadn't said it specifically, but he knew they wanted to charge him with Aidan's murder.

Bailey was sitting in the office as Mike stood over him. "Bailey," he breathed, "hitting James is not acceptable."

Bailey sneered, "Why should I care? He was insulting me."

But Mike just raised his hands. "Bailey, hitting someone means you're no better than them."

Bailey looked up, brow furrowed. "But they were being cruel. They were blaming me!"

"I know," Mike looked into Bailey's eyes, "believe me, I know it's hard..."

"You don't know anything!" Bailey snapped, rushing out of the office and storming up the stairs.

Mike read the report he'd received from Bailey's football team. Bailey had been kicked off the team due to fighting the other boys.

But then Mike saw all the details next to his notes. He knew this was just wrong.

James had said Bailey asked for it. Going off from the hotel and going down an alleyway. Matthew had told Bailey that 'since he didn't fight back, it wasn't assault'. Bailey told the others that he was drugged, to which Nicholas had snapped, "Shouldn't have taken it then."

William had then called Bailey 'gay'. They'd all mocked him and then James had gone, "Bailey, what really happened? 'Oh please, please, please, Mr Killer, I'll do anything because I'm a whiny, gay twit and I'll do anything because I ask for it by being stupid.'"

At that point Bailey punched James and he fell to the ground. James needed stitches and the football coach said Mike would pay the hospital fee.

Mike had told the coach that he wasn't paying the fee when James started it and that Bailey was going through a really difficult time.

The coach had replied, "Well, he shouldn't have wandered off in a strange place or talked to a stranger. He asked for it."

When Mike said Bailey had cried at night and kept waking the house up with his screaming late at night, the coach had retaliated, "You're supposed to be looking after him. He should man up."

Bailey just stayed in his room and cried. A few hours later, Jody and Kazima went to him. They looked at each other when he saw them and then Jody mumbled, "We – found these articles from the internet. We think it – might help. You're not alone."

Bailey silently sat on his bed as Jody read the first one.

"In Suffolk, this girl, Kimberley Acker, she was attacked by a teacher. Her classmates just kept bullying her because for some reason, the local newspaper printed her name when talking about the assault. This was in 2003, before social media. The school expelled her because they didn't want 'any reports of bullying' at the school and because they'd lost one of the best members of staff, according to the headmistress. She had to move and was too shaken to go to his trial so all charges were dropped and he went back to teaching at the school."

Bailey asked, still looking at the ceiling, "What happened to her?"

"The article said the newspaper issued her an apology but the school never did. The headmistress said she couldn't be responsible for what her students said outside of the school grounds. I don't know what happened to her; the article was from three years after the attack."

Even without looking at Bailey's sad face, Jody could tell this hadn't helped him much. So Kazima read hers out loud.

"In France, there was this case. This ten-year-old girl, Hannah Deschamps, she disappeared from...Conde-sur-Marne, in February 2013. She was found three days later at a house by Lac du Der-Chantecoq, a French lake. She was mocked by her classmates, who said she'd asked for it and she asked to go with them."

Bailey frowned. "I think I remember seeing that on the TV. Dad and I were eating dinner and it came on."

Kazima nodded. "The man and woman who took her had killed seven other children. She was lucky. They found three bodies in the back garden."

Bailey just sighed.

"These are all female. Did you find anything on male victims?"

Jody looked at another page.

"A fifteen-year-old in Denmark was attacked by a man in 1995 in this coastal village named Veddelev. The man was a neighbour who invited him in. The neighbour said the boy got drunk and then attacked him. Nobody believed the boy. His house was egged and covered in graffiti. Bricks were thrown through the window and milk bottles smashed. He was called gay. At the trial, the neighbour's lawyer kept asking the boy what he had worn, how much he'd drunk, if he flirted. The boy was too nervous and kept stammering and forgetting what happened and he gave conflicting statements."

Bailey turned his head, looking concerned. "And what happened?" he asked quietly, dreading the answer.

Jody sighed. "The neighbour got off free. The boy didn't receive counselling. His family believed him, but he didn't get any help. The village didn't believe the boy for nearly twenty years."

Bailey asked, "Why twenty years?"

Kazima answered, quickly, "Two years ago the neighbour's garden was dug up and they found bodies. All of them from after the trial."

Bailey just held his head in his hands, before looking up.

"Thanks for all your help, girls. If – if someone's house was broken into or a pyramid scheme, no-one would ask those questions. It's unfair."

Tyler was checking a book on unsolved murders. It included the case of Joel Wedekind, citing his disappearance. Quite a bit of the chapter described missing white woman syndrome and how this was what probably made his case noticeable. The disappearance of a young white girl not long after had caused Joel's case to get more attention, since Dutch police thought the cases were linked.

It went with early days, then into the ongoing investigation. The fact Joel was shoved aside as time went on. This had been mostly due to a lack of leads.

Then it said that in January 2013 Interpol had released cases they believed 'were committed by the same man or group of men across several European countries'. They said this was due to similarities between cases.

Edward Konig, Maurice Rey, Gerald Salzwedel and Torvald Gunvaldsson were all included with Joel, as were some cases Tyler had already heard of. The investigators at Interpol had said that these crimes all seemed to share similarities. Some had the same fingerprints and DNA at crime scenes.

There was a fibre from Maurice's jumper from his home town in Belgium that was found near where Gerald Salzwedel had been found.

Similar DNA had been found at the dumpsites of Edward and Gerald. The DNA had been hidden under Edward's zip-up cardigan so it had been hidden from animals. The police had said that the two samples 'if not from the same culprit then from two culprits that are related'.

Tyler frowned at all the information. Sure, the police did what they could, but he knew that they must have missed something.

Grunewald had no record. That could have been it, although he didn't know why they hadn't just interviewed anybody from his company. It said that they suspected the culprit used a van or truck as part of his job.

Maybe there were too many companies.

Tyler lay on his bed as he thought, staring up at the ceiling. How did a man like Grunewald think? Did they ever think about who they had hurt?

A/N: As with my last story, place names are chosen at random.