Haldane of the Secret Service is a 1923 American silent adventure film directed by Harry Houdini.

The film stars Harry Houdini, Gladys Leslie, William J. Humphrey, Richard Carlyle, Edward Boulden, Jane Jennings, and Charles Fang.

[1][2][3] "Heath Haldane (Houdini), son of a detective slain by a gang of counterfeiters, swears vengeance.

He rescues a girl (Leslie) from the gang, but is thrown into river by them for dead, and escapes.

"He rounds them up after many adventures, brings about their arrest, and discovers the leader of the gang is father of girl whom he loves."