Merrivale Holds the Key: Two Classic Locked-Room Mysteries : The Plague Court Murders/the Red Widow Murders (Library of Crime Classics)

The Peacock Feather Murders

The Unicorn Murders (Sir Henry Merrivale Golden Age Classic)

Locked Rooms: The Three Coffins; To Wake the Dead; The Skeleton in the Clock (Mystery Guild Lost Classics Omnibus)

Hag's Nook (Dr. Gideon Fell)

The Judas Window: A Sir Henry Merrivale Locked Room Mystery (A Rue Morgue Vintage Mystery)

Four Complete Dr. Fell Mysteries: To Wake the Dead / The Blind Barber / The Crooked Hinge / The Case of the Constant Suicides

The Case of the Constant Suicides: A Gideon Fell Mystery (Rue Morgue Vintage Mysteries)

The Black Lizard Big Book of Locked-Room Mysteries (Vintage Crime/Black Lizard Original)

Death in Five Boxes

The Hollow Man