Cooper. Wallace died in Hollywood while working on the original screenplay of this adventure epic.

Before Dawn. RKO. 1933. Stuart Erwin, Dorothy Wilson, Warner Oland. Directed by Irving Pichel. Based on Wallace’s short story “Death Watch.” A girl spiritualist, in a trance, tries to find the treasure hidden in a supposedly haunted house.

Mystery Liner. Monogram, 1934. Noah Beery, Astrid Allwyn, Gustav von Seyffertitz. Directed by Neill. Based on Wallace’s story “The Ghost of John Holling.” Murders take place on a liner at sea, while an inventor on board experiments with “wireless control of ships.”

The Return of Terror. First National, 1934. Mary Astor, Lyle Talbot, John Halliday. Directed by Howard Bretherton. Loosely based on The Terror, the 1927 play. A man accused of murdering three patients returns to an eerie sanatorium one stormy night.

Sanders of the River. London Film (British), 1935. Leslie Banks, Paul Robeson. Directed by Zoltan Korda. Based on the 1911 novel. Wallace’s tribute to British colonialism centers on efforts to keep peace among savage African tribes.

The Crimson Circle. Wainwright (British), 1936. Hugh Wakefield. Alfred Drayton. Beery, June Duprez, Niall McGinnis. Directed by Reginald Denham. Based on the 1922 novel (there was also a 1922 silent film version). The victims of a mysterious blackmail gang- and members of the gang itself- are found dead, marked with a red circle.

The Girl from Scotland Yard. Paramount, 1937. Karen Morley, Robert Baldwin, Eduardo Ciannelli.