Directed by Robert Vignola. From The Square Emerald (1926; U.S. title: The Girl From Scotland Yard). The heroine pursues the mad creator of a death ray.

The Squeaker (U.S. release title: Murder on Diamond Row). London-Denham (British), 1937. Edmund Lowe, Ann Todd, Sebastian Shaw, Robert Newton, Alastair Sim. Directed by William K. Howard. Based on the 1927 novel. Again, London’s fences are imperiled.

The Four Just Men (U.S. title: The Secret Four). Ealing (British), 1939. Hugh Sinclair, Griffith Jones, Francis L. Sullivan, Frank Lawton, Anna Lee, Basil Sydney, Alan Napier. Directed by Walter Forde. Based on the 1905 novel; previously filmed as a British silent in 1921. An actor, a producer, a costume designer, and a millionaire join forces to dispense justice privately; they eliminate a member of Parliament who was a traitor.

Dark Eyes of London (U.S. release title: The Human Monster). Argyle (British), 1939. Bela Lugosi, Hugh Williams, Greta Gynt. Directed by Walter Summers. Based on the 1924 novel. Scotland Yard probes the link between the kindly, gray-haired director of a workhouse for blind men and a shady insurance broker.

The Green Archer. Columbia serial, 1940. Victor Jory, Irish Meredith, James Craven. Directed by James W. Horne. Based on the 1923 novel. Criminals again occupy Bellamy Castle while the masked archer casts his shadow against the walls.

The Door with Seven Locks (U.S.