The first Tod Moran mystery in eight years finds the Araby's redoubtable second mate up to his ears in murder and mystery. The first night ashore in San Francisco, Tod is struck from behind in the fog, dragged into an apartment hallway, drugged and held for an indeterminate time, finally released semi-conscious into the night again. During this time a jewel robbery has taken place, and when Tod literally walks into the arms of two policemen, some of the stolen gems are found in his possession. The case against him grows stronger as be walts, helpless behind bars, for Captain Jarvis, Toppy and Swede from the Araby to find the real criminal with the slim clues he could provide. Each man plunges off on his own investigation, but it is Captain Jarvis who ""reasons"" out the answer in a series of mental gymnastics. A slight mystery with an unsatisfying ""lucky guess"" solution requiring nothing of readers but an uncritical approach.