James Answell is paying a visit to his future father-in-law, the champion archer Avory Hume, at his Grosvenor Street townhouse. Invited into the study and offered a drink, Answell suddenly swoons—and awakes to find the door and windows locked from the inside. His host is dead, skewered with an arrow, and Answell is prime suspect. The devilish puzzle constructed, Carter Dickson unravels an ingenious courtroom thriller, in which the razor-sharp amateur detective Sir Henry Merrivale argues for the defense in all of his outlandish glory—and the mystery of the 'Judas Window' is unveiled.First published in 1938, this landmark novel remains one of the greatest locked-room murder mysteries of all time, and a dazzling showcase of the author's unsurpassed flair for narrative legerdemain and jaw-dropping twists.