The Wedding Song (1925)

Hayes Hallan leaves the Pacific island where he was born for San Francisco to dispose of a fortune in pearls he has accumulated. He is befriended by confidence man Paul Glynn, who, learning about the pearls, arranges for his "family" to meet them in San Francisco. Following Glynn's plans, Hayes falls in love with and marries Glynn's sister, Beatrice. The newlyweds and the bogus family go to the island, where Beatrice has a change in heart and refuses to go along with the scheme. Glynn, however, makes her open Hayes's safe. Hayes appears and forces them at gunpoint to leave the island. Beatrice learns that a bomb has been planted under Hayes's house, retrieves it, and throws it off a cliff. The explosion creates a landslide, which sinks the crooks' ship. Beatrice and Hayes are reunited.