TimesRelatives and friends, and even some enemies, wait with bated breath to learn the outcome of the operation. The institution is hushed, the audience seated, the theater ready. The surgeon calls for his distinguished patient, and the doors swing open. A still form covered in a white sheet is wheeled into the theater. But when the sheet is removed, it reveals Ms. Doorn’s corpse, strangled to death with a picture wire. Who among the attendees was ruthless enough to carry out this gruesome operation? It’s up to Ellery Queen—and his most perceptive readers—to uncover the clues and find out.