St. Tredock Book Club disagree on everything, from the books they read to the biscuits they eat. For book club organiser Nova Davies, who's new to the Cornish seaside village, the digestive vs shortbread debate is just the start of her problems...

Under Nova's watch, £10,000 is stolen from the much-loved community centre. When book club member Michael disappears and a dead body turns up at his house, it seems clear who the perpetrator is. But the book club has their own theories.

Agatha Christie superfan Phyllis is determined to prove Michael's been framed, while romance fanatic Arthur believes there's a mystery woman involved, and teenage sci-fi reader Ash thinks dark forces are at play. Meanwhile, Nova's just trying to keep them out of trouble. Soon the book club becomes very busy indeed.

Full-time book lovers, part-time sleuths, they put their differences aside to find Michael, solve the murder and recover the stolen money - all while trying to hide their own secrets... Can they crack the case? And with a killer on the loose, what will it take until they're safe back home, curled up with book?