The Truthful Liar is a 1922 American mystery silent film directed by Thomas N. Heffron and written by Percy Heath and Will J. Payne. The film stars Wanda Hawley, Guy Edward Hearn, Charles A. Stevenson, Casson Ferguson, Lloyd Whitlock, George Siegmann, and E. Alyn Warren. The film was released on April 23, 1922, by Paramount Pictures.
Based upon a description in a film publication, Myles Calthrope (Warwick) is an English soldier of fortune who drifts into the diamond mining fields of South Africa and finds employment with some diamond smugglers who masquerade as feather merchants. When he comes to suspect their true business, Myles is dismissed. He then goes to Cape Town where he falls in love with Joan Farrant (Wilson). She helps him to get a job with her brother, who is also secretly a smuggler. The police arrest Myles in an illicit enterprise of which he has no knowledge, and he goes to prison for three years. Eventually the real criminals are arrested, and Myles finds happiness with Joan.
Based upon a description in a film publication, Katherine Van Riper (Clayton) is an extravagant young society girl who is very much in debt, and her wealthy aunts and uncle refuse to give her any money. Katherine is desperate enough that she is considering marrying the wealthy Montee Buck (Hiers), although she is in love with the westerner Tom Jaffrey (Fillmore), who says he is poor. Finally, Katherine decides to sell the famous Van Riper pearls, pay off her debts, and marry Tom. However, upon examination the jewelry turns out to be paste, with her father having sold the genuine pearls several years earlier before his death. Montee is assured by the aunts that Katherine will marry him and tells this to Tom. Tom is about to leave town when Uncle James (Ricketts) steps in and pays off Katherine's debts, leaving the niece free to marry Tom.