Publisher's Synopsis
One of the most famous detective stories ever written, "The Problem of Cell 13" explores a locked-room mystery starring super sleuth Professor Augustus S. F. X. Van Dusen, aka The Thinking Machine. The Professor appeared in nearly 50 other stories, and this collection presents 11 of the very best. Loaded with Edwardian period flavor, the realistic tales anticipate many of the major developments in modern crime fiction.