Revenge - how long would you wait?

A series of murders across London have a disturbing similarity - the number fifteen carved crudely into their dying flash. DI Jack MacIntosh and his team are up against it to find out who the killer is, and the significance of the number fifteen. 

He's back! The same killer, the same clues - but now he's on DI Jack MacIntosh's patch. in 2009, four women were brutally murdered in their own homes. The killer was never caught.  Four years later, it's happening again - and this time the killer must be stopped. 

Two bodies. One bridge. Twenty years apart. The discovery of two bodies beneath London Bridge plunges Jack and the team into a complex investigation spanning two decades. Jack is transported back to a miscarriage of justice and a little girl he vowed never to forget. Could both cases be connected and the river finally about to give up its secrets? 

Three nights. Three broken bodies. Someone wants these people silenced. When a local reporter's wife is kidnapped, Jack has to consider whether the cases are linked. And if they are, who is behind it? 

A punch to the face. A painful visit to the dentist. Then  a summons to go and see the boss. DI Jack MacIntosh isn't have a great start to the day. Then the call comes in - there's been a murder. Unfortunately, it won't be the last...

After a three month absence from work, recovering from his last brutal case, Jack's next investigation plunges him right back into the thick of it. The body of a young woman is found hanging from a curtain pole, but it is the sinister detail that stops Jack in his tracks. Inside her mouth is a London Underground map. He's back. Seventeen years ago they called him the Central Line Killer, and he was never caught. Can Jack unravel the twisted clues and catch the killer that is always one step ahead? 

A missing child. A killer on the loose. A past that refuses to die. When six year old Lucas Jackson disappears from a local winter fair, every parent's worst nightmare is about to come true. And for DI Nicki Hardcastle, as she searches for the missing boy her own past starts catching up with her - and fast. Can they find him in time to stop history repeating itself? Only time will tell, but it's time they don't have. 

Three grisly crime scenes. Body parts strewn across a pretty market town. Someone is playing twisted mind games with DI Nicki Hardcastle and her team, as they face their toughest case yet. But only the killer seems to know the rules. 

Two grisly murders. Three days apart. One brutal killer? Nicki and her team embark on another complex investigation, with a shocking and unexpected end...