"All right boys, gather round. I came in this morning and found this case on my desk. On the 27th July 1995, this man..." She pointed to the picture on the whiteboard as she carried on. "Is Sid Tiley, he was in prison on life sentence for the murder of Darren Lynch."

"I remember that case." Brian butted in. "It was a cannibal one, he ate most of him after stabbing him."

"So we're investigating a cannibal killer?!" Gerry asked.

"If you'd let me carry on you'd find out. Anyway no, that case is solved. Sid was killed 17 years into his prison sentence in the A wing at the prison down the road. He was also found half eaten."

"Revenge?" Gerry asked.

"Could be but there was never anything found. There were no leads and a lack of evidence so the investigation just ran out of steam. The killer timed it well though as at the time the murder took place there was a power-cut and all CCTV was down. Without that it was down to witnesses but you know the story, it's prison they're all dangerous people and no one wants to get on the wrong side of anybody else."

"They all saw nothing?" Jack asked knowing that would be the case.

"Hole in one." Sandra replied.

"So why is this been brought to the top of our pile of unsolved cases?" Jack asked trying to piece it all together in his head but knowing there would have to be new evidence for a reinvestigation.

"Good question. Last week a man turned up murdered, we ran his DNA through the system to try and come up with next of kin or any relative at all, but it matched some of the hair samples we found at Sid's murder scene."

"So was it him?" Gerry asked.

"Nope, he was only 12."

"Who would murder a 12 year old? They're still innocent at that age."

"I don't know, the murder squad are investigating that but he was killed in the same way as both Sid and Darren. We're only to look at this case though."

"So if it wasn't him it was a relative! This is just a job of tracing his family and looking which of them was in prison at the time."

"He was adopted as a baby, he never met his birth family and there's no name under father on his birth certificate."

"Right well search for the mum and ask. She wouldn't forget her child's father." Brian suggested.

"Good luck with that." Gerry replied as he looked through the case file. "She's also dead, also killed the same way."

"So we're looking for a serial cannibal killer?"

"Quite possibly and because its the same MO on all 4 murders it's thrown into doubt whether Sid really did murder Darren."