813 is a 1920 American mystery film directed by Charles Christie and Scott Sidney, written by Scott Darling from the 1910 story by Maurice Leblanc, produced by Al Christie, released by the Christie Film Company and the Robertson-Cole Pictures Corporation, and starring Wedgwood Nowell as jewel thief Arsene Lupin with a supporting cast featuring Ralph Lewis, Wallace Beery, and Laura La Plante.

As summarized in a film publication,[3] Robert Castleback (Lewis) has plans for worldwide power through a mysterious secret that he possesses.

Arsene Lupin (Nowell), master thief but loyal Frenchman, knows of the secret and is attempting to obtain state papers held by Castleback.

Soon he comes into contact with another master criminal, Ribeira (Beery), who is masquerading as Maj. Parbury, and Lupin suspects that he is complicit in the crime.

As he turns from the mantelpiece where he has discovered the hiding place of the state papers, he sees a mysterious man that he has been trailing.