Miss Willoughby is an educator and keen adventurer, an heiress to a family fortune who, along with her ex-forces butler, Robert, and cheeky but reliable Jack Russell, Bentley, gets pulled into mystery and adventure surrounding a haunted antique bookshop.

Four sisters – Caroline, Joanna, Paulina, and Vicky – reunite for the Christmas Holiday in a Yorkshire mansion. However, their estranged father, James, joins in for the first time since he left the family behind decades prior. The group attempts to get through the holiday despite comedic misunderstandings, while also uncovering the long-buried secret that tore their family apart, so many years ago.

A series of murders has shaken the community to the point where people believe that only a legendary creature from dark times – the mythical Golem – must be responsible.