The Jekyll & Hyde detective agency must solve a locked-room mystery in this festive installment of the series. A tribute to classic Golden Age crime novels which is perfect for fans of Stuart Turton and Lucy Foley.Henry Jekyll and Muriel Carew infiltrate a Christmas artists retreat to investigate a series of death threats. Though the country manor is filled with festive cheer, stage rehearsals and jolly games, its colourful guests harbour dark secrets. Henrys transformations into the brutish Edward Hyde are more frequent than ever, and Edward is as likely to create new problems as he is to aid the investigation. When a murder is committed onstage, heavy snow prevents the arrival of the police… which means that only the Jekyll & Hyde detective agency can solve the case.