Locked-room mystery
…is Mike W. Barr's Maze Agency. John Dickson Carr, who also wrote as Carter Dickson, was known as "master of the locked-room mystery". His 1935 novel The Hollow Man (US title: The Three Coffins) was in 1981 voted the best locked-room mystery novel of all time by 17 authors and reviewers, although Carr himself names…