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After a wealthy woman is strangled in a hospital full of relatives and friends, Ellery Queen searches for her deadly enemy.

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When Ellery Queen, described by the London Times as the logical successor to Sherlock Holmes, is invited by his friend, a doctor, to witness an operation, he accepts the offer in hopes of furthering his capabilities as an amateur detective, but soon ends up testing those same skills. The patient who is about to undergo the delicate procedure is Abagail Doorn, the richest and most famous woman in America; the doctor who will perform it is her protégé, one of the leading surgeons on the East Coast. It will all take place in the main operating theater of the vast hospital that she founded.
Relatives 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. Doorns corpse, strangled to death with a picture wire. Who among the attendees was ruthless enough to carry out this gruesome operation? Its up to Ellery Queen - and his most perceptive readers - to uncover the clues and find out.

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Ellery Queen was a pen name created and shared by two cousins, Frederic Dannay (1905-1982) and Manfred B. Lee (1905-1971), as well as the name of their most famous detective. Born in Brooklyn, they spent forty-two years writing the greatest puzzle-mysteries of their time, gaining the duo a reputation as the foremost American authors of the Golden Age fair play mystery. Eventually famous on television and radio, Queens first appearance came in 1929 when the cousins won a mystery-writing contest with the book that would eventually be published as The Roman Hat Mystery. Besides co-writing the Queen novels, Dannay founded Ellery Queens Mystery Magazine, one of the most influential crime publications of all time. Although Dannay outlived his cousin by nine years, he retired the fictional Queen upon Lees death.

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