The Last Warning (1929) is a mystery film directed by Paul Leni. It is a companion piece to Universal Pictures 1927 production of The Cat and the Canary. This was the last film directed by Leni before his death from blood poisoning in Los Angeles on September 2, 1929. It was adapted from the 1922 Broadway melodrama mystery The Last Warning written by Thomas F. Fallon based on the story The House of Fear by Wadsworth Camp, the father of the writer Madeleine L'Engle.