"First published in Britain in 1949, Brand's exuberant novel is still regarded as one of the great masterpieces of the classic mystery genre for its fiendishly constructed puzzle, memorable setting, dumbfounding acts of misdirection and thrilling denouement. This edition includes an introduction by award-winning author Martin Edwards. "A very neat version of the 'sealed room' mystery... provides [Miss Brand] with excellent opportunities to indulge...