A baffling case. A mysterious inheritance.

It starts when a man's arm is fished out of Paris's Canal Saint-Martin. Then the rest of the body is retrieved - apart from the head. Inspector Maigret is determined to unearth the truth behind this disturbing murder. When he meets the strangely taciturn owner of a shabby local bistro, Madame Calas, who says her husband is away, the pieces start to fall into place. But, as the dogged, laconic detective discovers, nothing in this tangled case is as it seems.