Again thank you for the reviews. A word of warning things are about to get very dark *runs back to hiding place* xx

Lestrade yawned, he was tired and irritable. He had not had his morning coffee yet and his brain was crying out for nicotine. Smoking patches was just not the same.

Sherlock came bounding into his office, as usual he didn't look like he had slept, or eaten or done anything except sit and think.

'The wedding ring' He panted.

'I'm sorry' Lestrade was confused, what did someone's wedding ring have to do with any of this?

'Natalie Peirce, was she wearing her wedding ring?' Sherlock sat of a chair. Lestrade flicked through a couple of crime scene photos that lay on his desk.

'Yes. She was'

Sherlock leapt up in the air. 'She had sex but she wasn't having an affair, if she was she would have taken her wedding ring of. How could I have been so stupid, oh he is clever, really clever'

'Sherlock where are you going with this?'

Sherlock grabbed his shoulders 'Don't you see, it happened on Valentine's Day, that's what I missed. I was overlooking something and it was Valentine's Day.'

'Erm ok, care to explain to those who are not high functioning sociopaths' Lestrade hated Sherlock's look that he gave him, as if he was expected to keep up.

'This crime, it's not to do with trafficking or revenge, it's love Lestrade, this crime is a crime of love. When we first walked into the crime scene it looked like a date, that's because it was. Coyle was a loner and Peirce had her wedding ring on, means that neither wanted the date to happen, they were forced into it. He forced them to be his date for the evening and in the morning he killed them'

'So...' Lestrade was really confused now.

'The killer is living out a fantasy, he stalked Coyle, knew her life inside out so he knows exactly what to say to get into her flat, he drugged her and when she came round they played his game'

Lestrade scrunched his face up 'Why would he do that'

'Valentine's Day, time of year where everyone is reminded of their relationship status, probably hates being single, feels lonely. Wants a girlfriend desperately but couldn't get one because he is a psychopath. Combine that with a desire to kill and there you have it, dead pretend girlfriend'

'Ok , why did Coyle let him?'

'She couldn't run away so she stayed, played along because she thought that was her best chance of staying alive. she found her phone gone and the door locked, she couldn't get out or call for help, he was probably armed, threatened her. He forced her into being his girlfriend for the evening. Don't you see, the dinner, breakfast everything.'

'And Lopez?'

'Lopez saw something, blackmailed him so she was killed, we arrest Adam's so he thinks he has got away with it. Hence why he murdered again'

'Ok, that's Coyle and Lopez but what about Peirce?'

'She lived and in the same building as Coyle. That's how he chose her. While he was stalking Coyle he must have watched the building, learnt about her to.'

Sherlock ran around Lestrade's office scattering case files. He glanced at the morning papers and his eyes lit up.

'Adams arrest, has it been reported?'

'I'm doing as statement today. Should mean it will be in the papers tomorrow.'

Sherlock took a deeply inhaled 'He knew. He knew we would arrest Adams. That's why he chose Coyle, he knew we would think it was Adams. He knew she was obsessed with Adams. 'He then clapped his hands together 'He's made a mistake, we have a mistake' Lestrade noticed Sherlock wasn't looking at him.

'I am still here you know'

'Don't you see, don't you see! He killed Peirce because he thought he had got away with it, knew he had reached Lopez in time because we arrested Adams, that's why he killed again, but there was no way he could have known Adams would have been arrested because it hasn't been reported yet, unless...'

Lestrade smiled 'So, we are looking for someone who is close to the police and with Coyle and knew she had an unhealthy obsession with the Adam's case.'

Sherlock sprinted of, where to Lestrade, as usual, had no idea.

Sherlock caught a taxi back to Baker St. John had stayed out all night, he didn't like not knowing where John was. He tried ringing John's phone but yet again there was no answer. He knocked on Mrs Hudson's door. John wouldn't come back to their flat, had nowhere else to go so he assumed he slept of Mrs Hudson's sofa.

'Hello dear'

'John, where is John?'

'Sorry dear I haven't seen him' At first Sherlock thought she was lying, but she did not have that twitch in her left eye whenever she did lie, and he could clearly see the sofa had not been slept on.

He tried Mycroft. He had surveillance on him after all.

Have not seen him since yesterday morning MH

Sherlock assumed John had gone to his sisters after all.

I need you to find Harry Watson SH

Sherlock put his mind back on the case.