Synopsis of Whose Body from Goodreads

The first in the acclaimed Lord Peter Wimsey series, the case of a dead bather draws Lord Peter into the first of many puzzling mysteries.

Lord Peter Wimsey spends his days tracking down rare books, and his nights hunting killers. Though the Great War has left his nerves frayed with shellshock, Wimsey continues to be London’s greatest sleuth—and he’s about to encounter his oddest case yet.

A strange corpse has appeared in a suburban architect’s bathroom, stark naked save for an incongruous pince-nez. When Wimsey arrives on the scene, he is confronted with a once-in-a-lifetime puzzle. The police suspect that the bathtub’s owner is the murderer, but Wimsey’s investigation quickly reveals that the case is much stranger than anyone could have predicted.