Following a mysterious explosion, the offices of Excelsior Joinery Company are no more; the three directors are killed and the peace of a quiet town in Surrey lies in ruins. When the supposed cause of an ignited gas leak is dismissed and the presence of dynamite revealed, Superintendent Littlejohn of Scotland Yard is summoned to the scene. But beneath the sleepy veneer of Evingden lies a hotbed of deep-seated grievances. Confounding Littlejohn's investigation is an impressive cast of suspicious persons, each concealing their own ax to grind.

While hot on the heels of serial coupon-racketeer Gordon Ginner, Chief Inspector MacDonald of Scotland Yard receives word of an intriguing incident up in Lancashire – the summer cottage of local farmer Giles Hoggett has been broken into, with an assortment of seemingly random items missing which include a complete reel of salmon line, a large sack, and two iron dogs from his fireplace. What first appears as a simple break-in quickly spirals into a mystery of contested land grabs for fishing between farmers, made all the more enticing to MacDonald when a body is then found in the river.

Vivian Lestrange - celebrated author of the popular mystery novel The Charterhouse Case and total recluse - has apparently dropped off the face of the Earth. Reported missing by his secretary Eleanor, whom Inspector Bond suspects to be the author herself looking for publicity, it appears that crime is afoot when Lestrange's housekeeper is also found to have disappeared. Bond and Warner of Scotland Yard set to work to investigate a murder with no body and a potentially fictional victim.

When the San Angelo drifts into port in the Thames Estuary, telephones begin to ring across the capital and an intricate series of events is set in motion. Beset by dreadful storms in the Bay of Biscay, the ship, along with the 'mixed cargo' it carries, is late. Unaware of the machinations of avaricious importers, wayward captains and unscrupulous traders, Harry Reed and June Harvey are thrust together by a riverside accident, before being swept into the current of a dark plot developing on the dockside. 

Uncle Willie has come to stay with the Redpaths for the holidays. It is just their luck for him to be found dead the morning after Christmas day, dressed in his Santa Claus costume, seemingly poisoned by his favourite chocolates. Or was there something sinister in the mince pies? If so, was it the ones stashed in his room or those sent to him mysteriously by post? More importantly, since his will was recently redrafted, who stands to gain by this unseasonable crime?