In series two, the bibliophile sleuth investigates the world of spiritualism as he helps to solve a baffling case involving medium Harold Sneed and a séance full of secrets. Off Savile Row, Inspector Bliss asks Book to help in a puzzling crime at a gentleman's outfitters – the elderly tailor Maxie Kleinmann is keen to confess to murder but the evidence doesn't quite stack up and points to something much more complex and sinister. And Book and Jack are sent to the seemingly charming German village of Würl by the mysterious ‘E' to thwart a thieving Duchess at Christmas time. However, festivities take a deadly turn when Book and Jack uncover secrets of their own in a castle brimming with shady characters. Book's association with the police continues to be not without its personal dangers and his lavender marriage with childhood best friend Trottie, is threatened by the debonair Colonel Winters.