Madame Mystery (1926)

A female secret agent has gotten ahold of a new type of explosive gas. She has to avoid the efforts of two men who are trying to steal it. They succeed in doing so, but the gas turns out to be not quite what they expected.

Directed by: Richard Wallace, Stan Laurel

Starring: Theda Bara, Tyler Brooke, James Finlayson, Oliver Hardy, Fred Malatesta, Martha Sleeper

Links: IMDb, Movie posters, Movie stills