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 prot