Sealed Lips (1925)

Margaret Blake, daughter of notorious gambler "Square Deal" Blake, has not told her sweetheart, Alan Howard, a son of wealth, about her father. College chum Jack Warren takes Alan to Blake's gambling house, and Alan misunderstands Margaret's affection for her dying father and breaks with her without giving her a chance to explain. Margaret inherits the gambling house. George Garnett, Blake's lawyer, who has become friendly with Alan's sister Alice, persuades Howard, Sr., to gamble his wealth ($250,000 in bonds) in a card game employing a supposedly stacked deck. He loses and dies of heart failure. Alan accuses Margaret of causing his father's death and refuses her offer to return the bonds. Alice does accept the bonds from her, but Garnett, who plans to flee to South America, has her sign them over to him. He attacks her, and Alice stabs him. Believing she has killed him, Alice flees. Margaret takes the blame, but the police arrest both. Garnett is exposed, and the film ends with Warren and Alice and Alan and Margaret about to celebrate a double wedding.