A priest hears a murderer's confession but can't reveal the truth, even though his brother is being tried for the crime.

At a London auction, Princess Sonia bids against her husband, exiled Prince Victor, for a Corot landscape in which incriminating letters Sonia wrote are hidden, but it is bought by Michael Lanyard, suspected of being the mysterious, international thief "The Lone Wolf." After Lanyard gives Sonia the letters, she divorces Victor, marries Lanyard and dies after bearing their daughter Sonia. Years later, Sonia, who thinks she is the daughter of the Princess' maid, is found by Victor, now the leader of an underworld gang of Oriental crooks and Bolsheviks. Saying he is her father, Victor brings her to his home, hoping to entice Lanyard to make an appearance.

U.S. Navy Lieutenant George Blenton becomes drunk at an official reception, and his fiancee, Jane Ravenslee, the captain's daughter, breaks their engagement. After war is declared, George, entrusted with a secret code book to deliver to an English admiral, drinks and loses the book which German spies recover. During a private court-martial he is offered a pistol for suicide. After drinking again, he fires a shot, but still lives. Put ashore on the island of Tafofu "to rot," George, hating the U.S., moves in with Lehua, a half-white who tries to wean him from drink.

A female ape takes to mothering the orphaned boy (Tarzan) and raises him over the course of many years until a rescue mission is finally launched and the search party combs the jungle for the long-time missing Lord Greystoke. But then, one of the search members, Jane Porter, gets separated from the group and comes face to face with fearsome wild animals. Tarzan saves her from harm just in the knick of time and love begins to blossom.

John Cranford is a U.S. customs agent dedicated to stem the activities of a gang of opium smugglers. After successfully closing the case, Cranford takes a vacation on Pidgin Island, near Kingston, Ontario. Here he meets the beautiful Diana Wynne, whose mysterious behavior both fascinates and attracts him. It turns out that Diana is herself a secret service agent, bent on trapping notorious pearl smuggler Michael Smeed.

Two young clerks in a department store meet and fall in love during a seaside vacation in Maine, but part as strangers because, unknown to each other, both had been masquerading as upper-class 'swells', just to see how the better half lives.