It's dark in the Dales this winter.... When Mrs Shepherd arrives at the Dales Detective Agency on a December morning, quite convinced that someone is trying to kill her, Samson O'Brien dismisses her fears as the ramblings of a confused elderly lady. But after a series of disturbing incidents at Fellside Court retirement home, he begins to wonder if there is something to her claims after all.... With Christmas around the corner, Samson is thrown into a complex investigation.

In utter disbelief Miss Marple read the letter addressed to her from the recently deceased Mr Rafiel—an acquaintance she had met briefly on her travels. Recognising in Miss Marple a natural flair for justice, Mr Rafiel had left instructions for her to investigate a crime after his death. The only problem was, he had failed to tell her who was involved or where and when the crime had been committed. It was most intriguing.

Hannah Francis has been forced to leave her beloved mother and the life she knows in the silk mill town of Macclesfield and is set to become an apprentice at a cotton mill in the Derbyshire dales. It is a cruel blow for such a young girl, but her three travelling companions are even younger than she is, and Hannah is determined to keep their spirits up and remain in good cheer.

It is a cold January morning and Shetland lies buried beneath a deep layer of snow. Trudging home, Fran Hunter's eye is drawn to a vivid splash of colour on the white ground, ravens circling above. It is the strangled body of her teenage neighbour Catherine Ross. The locals on the quiet island stubbornly focus their gaze on one man – loner and simpleton Magnus Tait. But when police insist on opening out the investigation a veil of suspicion and fear is thrown over the entire community. For the first time in years, Catherine's neighbours nervously lock their doors, whilst a killer lives on in their midst.

Landscape gardener Imogen Bishop has spent the last 30 years trying to forget one fateful school night but when her estranged husband Greg Bishop is found dead in the grounds of her father's Georgian hotel, danger threatens to overwhelm her. Retired police officer Adam Hennessey, hoping for a peaceful life running his traditional Somerset country pub, finds himself drawn into the unfolding drama in the hotel across the road. 

Jemima Jago has moved back home to the enchanting Isles of Scilly. Ready for a fresh start in a quaint coastal village, she can be found in the stacks of Cornwall’s oldest library by day and stargazing in the cove at night. Jem finds the slower pace of life suits her perfectly, until she stumbles across a very curious crime.....   

The young man with the shock of white-blond hair lay spread-eagled on the floor, surrounded by fallen books. His hand reached out to the scattered pages, as though he was trying to tell her something. But who is he? How did he come to be killed in Flora’s ordinary little bookshop? Flora finds out he was staying at the Priory Hotel, and when the gardener suddenly dies in its beautiful grounds only a few days later, she is certain that something untoward is happening in her quiet village by the sea. 

In the sleepy village of Cookingdean, Dr Nell Ward is busy working in the grounds of a local manor house. Whilst inspecting an old tunnel, she did not expect to overhear a murder. As the only person with any clues as to what happened, Nell soon finds herself in the middle of the investigation. Desperate to clear her name Nell, along with her colleague Adam, set out solving the murder using their skills as ecologists to uncover details no one else would notice. But it soon becomes clear that playing Agatha Christie is much harder than it might, at first appear.

Every Thursday, three retired school teachers have their ‘coffee o’clock’ sessions at the Thirsk Garden Centre café. But one fateful week, as they are catching up with a slice of cake, they bump into their ex-colleague, Topsy. By the next Thursday, Topsy’s dead. The last thing Liz, Thelma and Pat imagined was that they would become involved in a murder. But they know there’s more to Topsy’s death than meets the eye - and it’s down to them to prove it.

Having decided to redecorate Woodside Cottage, Jude has engaged the services of local man Pete, who has painted and decorated the homes of Fethering residents for many years. Pete is currently working on Footscrow House, a large Victorian building being converted into holiday flats. Whilst at 'Fiasco House', Jude and Pete make a surprising discovery behind a wall panel: a woman's handbag! The casual discovery becomes serious when the police identify the handbag's owner as Anita Garner, a young woman who vanished in suspicious circumstances 20 years earlier.

It's harder to search for someone when they're determined not to be found. Joe, struggling to survive in a high-powered law firm, is faced with the challenge of finding his childhood friend, Jenna, who has been missing for four years. But has she disappeared through choice? Or is she under the powerful influence of her husband, the restless, troubled Chetwood?

Police Officer Jemima Cotton expected Little Cote to be a quieter pace of life. But, unlike London, everyone knows everyone, and beyond the cake sales and coffee mornings, tea parties and village fetes, the neighbours aren't all the best of friends. When Jemima is unpacking her mugs and teabags in her new home on Foxglove Close, she's called to attend her first murder investigation. She's excited, until she discovers it's only a few doors down from her. And she hasn't even met her new neighbours yet.

June 1933. Independent, young Kitty Underhay has been left in charge of her family’s hotel, The Dolphin, on the tranquil English coast. But when several rooms are broken into and searched, including Kitty’s own, she quickly realizes that something out of the ordinary is afoot at the hotel. Soon, rumors are flying in the cozy town that someone is on the hunt for a stolen ruby. A ruby that Kitty’s mother may well have possessed when she herself went missing during the Great War.

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. 

When Ed Finnlay - computer programmer and devoted father of two - goes missing, there's not a lot the local police can do. After all, Ed himself told them he would be gone... for quite some time. As the weeks go by with no news, his wife reaches out to Jack and Sarah for help. But they soon learn that there are odd secrets about this missing husband and that he might not only be gone, but also in serious danger. Can Jack and Sarah do what seems impossible.