On 1st of December, renowned puzzle setter, loner and Christmas sceptic Edie O’Sullivan finds a hand-delivered present on her doorstep. Unwrapping it, she finds a jigsaw box and, inside, six jigsaw pieces. When fitted together, the pieces show part of a crime scene – blood-spattered black and white tiles and part of an outlined body. Included in the parcel is a message: ‘Four, maybe more, people will be dead by midnight on Christmas Eve, unless you can put all the pieces together and stop me.’ It’s signed, Rest In Pieces.

Fiona, Sue, and Daisy, three retired ladies who volunteer at the local charity shop, Dogs Need Nice Homes, can’t believe their favorite customer is dead. Eighty-six-year-old Sarah Brown was found murdered in her hallway by her delivery man, a domino clutched in her hand—with a name scratched on it. When another person is found dead with a domino in their hand, and with the police making no progress, the ladies will need to help unmask a serial killer. At least they have Fiona’s scruffy-haired terrier cross to assist them.

When Holly White's fiancé cancels their Christmas Eve wedding with less than two weeks to go, Holly heads home with a broken heart. Lucky for her, home in historic Mistletoe, Maine is magical during Christmastime - exactly what the doctor prescribed. Except her plan to drown her troubles in peppermints and snickerdoodles is upended when local grouch and president of the Mistletoe Historical Society, Margaret Fenwick, is bludgeoned and left in the sleigh display at Reindeer Games, Holly's family tree farm.

DI Tom Stonem’s peaceful holiday is cut short when a body is discovered nearby, in the shadow of the Angel of the North. The dead man is bound, his arms outstretched in the sculpture’s iconic pose. In the man’s pocket is what appears to be a little girl’s Christmas list, with the first item – 1. Angel delight – crossed off. When a second body is found – a woman, stabbed in the abdomen after her work Christmas do – Stonem can’t help but notice a grim connection between the crime scenes and the items on the seemingly innocent list. 2. Red party dress. Could this be a murderer’s twisted code?

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.