The Madness of Love (1922)

Sim Calloway has been unscrupulously acquiring Capt. James Strong's fleet of ships. Therefore, Strong is horrified to learn that his daughter, Mary Anne, is in love with artist David Calloway, Sim's nephew; forbids her to see him; and locks her in her room. Furious, Calloway causes David to be taken on a long sea voyage, intercepts his letters to Mary Anne, and finally tells her that David has died, thus causing her mind to become unbalanced. Strong is eager for revenge, but Calloway is trapped in a cellar, where he gloats madly over the purloined love letters. David returns, recognition slowly returns to Mary Anne, and they are united.