In a community nourished and sustained by myth and bordered by untamed nature, the search for a serial killer becomes a matter of life and death for local detective Annie Redford who is trying to cope with her first murder case. When the body of local man Niall Swift is found at the foot of Carn Mohr Mountain and an isolated human heart on the loch shore, the town's normality is shattered and the nightmare begins. Chillingly, the beautiful scenery, undulating Highlands and vast expansive loch becomes a character in its own right adding a haunting depth to the community's plight.

A veteran beat cop and teenage girl fall to their deaths from a tower block in south-east London, leaving a five-year-old boy and rookie police officer Lizzie Griffiths on the roof, only for them to go missing. Detective Sergeant Sarah Collins is drafted in to investigate, working to find Lizzie before she comes to serious harm, but also to uncover the truth behind the grisly tower block deaths.

When a seemingly perfect and happy family is murdered by someone they knew and trusted, cracks appear on the surface of a supposedly idyllic community.

An unexplained death - and five friends bound together by a fragile pact of silence. What really happened that night in the woods?

While attending an online forensic course, young lab assistant discovers that the fictitious case study has a link to her past. With the help of two female professors she works on bringing a killer to justice.

Leeds police constable Jo Gillespie is devastated when her husband, undercover officer Ryan, is killed in suspicious circumstances. As she battles to stay strong for the benefit of daughter Melly and stepson Hal, Jo is urged by her bosses, DCI Will Hepburn and Chief Constable Carolyn Jarecki, to leave it to her fellow officers to find the killer. But when the murder inquiry starts to uncover some dangerous secrets about Ryan, Jo's faith in the police family of which she has been a part for so long is severely tested. No longer sure who to trust, Jo embarks on her own investigation with the help of friend and colleague Jack Clark, but as they close in on the identity of Ryan's killer, Jo's hunt for the truth will put her own life in danger.

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