Christmas Jigsaw Murders

It's beginning to look a lot like murder... On 19th December, renowned puzzle setter, loner and Christmas sceptic Edie O'Sullivan finds a mysterious gift-wrapped parcel on her doorstep. Inside are six jigsaw pieces showing part of a blood-spattered crime scene and a message from a killer : 'Four, maybe more, people will be dead by midnight on Christmas Eve, unless you can put all the pieces together and stop me.' Edie's nephew, DI Sean Brand-O'Sullivan, takes over the official investigation but a series of cryptic dues soon have the police stumped.
As the body count rises, Edie knows that only she has the knowledge to solve the killer's murderous puzzle - but first she'll have to face her own ghosts of Christmas past.