Clutch of Constables: Inspector Roderick Alleyn #25 (Volume 25)

Inspector Alleyn's wife, the artist Agatha Troy, boards a river cruise through "Constable Country" in the east of England to celebrate the nineteenth-century landscape painter John Constable, whose work she admires. Her enthusiasm is tempered when she learns that a ticket became available only because the previous passenger was murdered in his cabin. As the cruise proceeds, a ruthless criminal threatens to sink the vessel. Alleyn must navigate the case while aboard, where a killer operates among the passengers and crew.