In a sensational breach-of-promise suit, two wealthy social climbers are
suing on behalf of their beautiful daughter, Zillah. The defendant is
Zillah's alleged fiancé, brilliant young architect Killian Melville, who
adamantly declares that he will not, cannot, marry her. Utterly
baffled by his client's refusal, Melville's counsel, Sir Oliver
Rathbone, turns to his old comrades in crime--William Monk and nurse
Hester Latterly. But even as they scout London for clues, the case
suddenly and tragically ends, in an outcome that no one--except a
ruthless murderer--could have foreseen.