Samson O'Brien has been dismissed from the police force and returns to his hometown of Bruncliffe in the Yorkshire Dales to set up the Dales Detective Agency while he fights to clear his name. However, the people of Bruncliffe aren't that welcoming to a man they see as trouble. Delilah Metcalfe, meanwhile, is struggling to keep her business, the Dales Dating Agency, afloat - as well as trying to control her wayward Weimaraner dog, Tolpuddle. Then when Samson gets his first case, investigating the supposed suicide of a local man, things take an unexpected turn.

1930. A chilling encounter on London's Necropolis Railway leads to murder. At the Old Bailey, a man accused of a 'blazing car' killing escapes the gallows after a surprise witness gives sensational evidence. And journalist Jacob Flint finds himself framed for murder. To save himself, Jacob needs to discover what links these strange events to a remote estate on a northern coast, Mortmain Hall. At Mortmain Hall, an eccentric female criminologist hosts a gathering of people who have narrowly escaped the consequences of miscarriages of justice. 

Detective Peter Porteous is called to Cranwell Lake, where the body of a teenager has been discovered. After trawling through the missing persons files, he deduces that the corpse is Michael Grey, an enigmatic and secretive young man who was reported missing by his foster parents in 1972. For country prison officer Hannah Morton, it is the shock of her life. Michael had been her boyfriend, and she had been with him the night he disappeared. The news report that a body has been found brings back dreaded and long-buried memories from her past.... 

England, 1920. Eleanor Swift has spent the last few years travelling the world: taking tea in China, tasting alligators in Peru, escaping bandits in Persia and she has just arrived in England after a chaotic 45-day flight from South Africa. Chipstone is about the sleepiest town you could have the misfortune to meet. But then, from the edge of a quarry, through the driving rain, Eleanor is shocked to see a man shot and killed in the distance. Before she can climb down to the spot, the villain is gone and the body has vanished.

Captain Sam Wyndham, former Scotland Yard detective, is a new arrival to Calcutta. Desperately seeking a fresh start after his experiences during the Great War, Wyndham has been recruited to head up a new post in the police force. But with barely a moment to acclimatise to his new life or to deal with the ghosts which still haunt him, Wyndham is caught up in a murder investigation that will take him into the dark underbelly of the British Raj.

Mrs Bradley, sharp-eyed detective and celebrated psychiatrist, has decided to spend Christmas with her nephew at his beautiful house in the Cotswolds. It isn’t long before a mystery unfolds. There are strange events occurring in the nearby wood, and local villagers are receiving anonymous threatening letters. Then the snow begins to fall - and a body is discovered. Mrs Bradley is on the case, but she’ll have to hatch an ingenious plan to reveal the truth and find the culprit....

When Dr Raymond Ferens moves to a practice at Milham in the Moor in north Devon, he and his wife are enchanted with the beautiful hilltop village lying so close to moor and sky. At first they see only its charm, but soon they begin to uncover its secrets - envy, hatred and malice. Everyone says that Sister Monica, warden of a children's home, is a saint - but is she? A few months after the Ferens' arrival her body is found drowned in the mill-race. Chief Inspector Macdonald faces one of his most difficult cases in a village determined not to betray its dark secrets to a stranger.

When an old man is found viciously murdered, a swastika carved in his chest, the obvious conclusion is that this killing must be racist. Suspicion falls on the son of the local doctor, found in flagrant playing sex games surrounded by Nazi paraphernalia.

The world is messing with our minds. Rates of stress and anxiety are rising. A fast, nervous planet is creating fast and nervous lives. We are more connected yet feel more alone. And we are encouraged to worry about everything from world politics to our body mass index. How can we stay sane on a planet that makes us mad? How do we stay human in a technological world? How do we feel happy when we are encouraged to be anxious?

Detective Inspector Avison Fluke is a man on the edge. He has committed a crime to get back to work, concealed a debilitating illness and is about to be made homeless. Just as he thinks things can't get any worse, the body of a young woman is found buried on a Cumbrian building site. Shot once in the back of the head, it is a cold, calculated execution. When the postmortem reveals she has gone to significant expense in disguising her appearance, Fluke knows this is no ordinary murder.