Meet Jenny Starling: travelling cook and reluctant amateur detective. Jenny Starling is catering the 21st birthday party of upper-class twins Alicia and Justin. She arrives at their parents' country house and is immediately met by the police. A young man has drowned in the pond. Was it an accident or murder? But the birthday party goes ahead. Then, just after midnight, everyone gathers for a champagne toast...and one of the guests falls down dead. The police are baffled, and there is a whole party full of suspects. 

Oxford, 1960. There's a murderer on the loose, and two unlikely heroes are poised to solve the case. Meet Trudy Loveday - smart, enthusiastic and always underestimated. In the hope of getting her out of the way, Trudy is assigned to help coroner Clement Ryder as he reopens the case of a young woman's death. She can't believe her luck - she is actually going to be working on a real murder case. Meanwhile, the rest of the police force are busy investigating a series of threats and murders in the local community, and Clement can't help but feel it's all linked.

Detective Chief Inspector Ryan retreats to Holy Island seeking sanctuary when he is forced to take sabbatical leave from his duties as a homicide detective. A few days before Christmas, his peace is shattered, and he is thrust back into the murky world of murder when a young woman is found dead amongst the ancient ruins of the nearby priory. When former local girl Dr. Anna Taylor arrives back on the island as a police consultant, old memories swim to the surface, making her confront her difficult past.

After an elite criminal profiling unit is shut down amid a storm of scandal and mismanagement, only one person emerges unscathed. Forensic psychiatrist Doctor Alexander Gregory has a reputation for being able to step inside the darkest minds to uncover whatever secrets lie hidden there, and soon enough he finds himself drawn into the murky world of murder investigation. In the beautiful hills of County Mayo, Ireland, a killer is on the loose. Panic has a stranglehold on its rural community, and the Garda are running out of time. 

DI Nikki Galena: A police detective with nothing left to lose, she's seen a girl die in her arms, and her daughter will never leave the hospital again. She's gotten tough on the criminals she believes did this to her. Too tough. And now she's been given one final warning: make it work with her new sergeant, DS Joseph Easter, or she's out.