Mystery Plane is a 1939 English-language Action Adventure film directed by George Waggner and produced by Paul Malvern under the banner of Monogram Pictures. A pilot invents a revolutionary new bomb-targeting system. However, just before he is to deliver it to the Army Air Corps, he is kidnapped by a criminal gang who want to give the system to a foreign power, and threaten to kill his girlfriend unless he gives them the plans. Written by frankfob2@yahoo.com. Mystery plane stars John Trent, Marjorie Reynolds, Milburn Stone, Jason Robards Sr., George Lynn, Lucien Littlefield and Arthur Thalasso. The screenplay is written by Paul Schofield and George Waggner which is inspired from Tailspin Tommy by Hal Forrest Glenn Chaffin. The music was composed by Frank Sanucci. Cinematography was done by Archie Stout and editing by Carl Pierson. The motion picture has a running time of 60 minutes. It was released on 8th March 1939. Distribution rights for the film were acquired by Monogram Pictures.