The best Lionel Royce’s adventure movies

A group of archaeologists asks Tarzan to help them find an ancient city in a hidden valley of women. He refuses, but Boy is tricked into doing the job. The queen of the women asks Tarzan to help them.

A US Navy submarine, the USS Corsair, is operating in the North Atlantic, hunting German merchant raiders that are preying on Allied shipping. Its new executive officer, Lt. Ward Stewart (Power), has been transferred back into submarines after commanding his own PT boat. At the submarine base in New London, Connecticut, he asks his new captain, Lt. Cmdr. Dewey Connors (Andrews), for a weekend leave to settle his affairs before taking up his new assignment. On a train bound for Washington D.C., Stewart accidentally encounters New London school teacher Jean Hewlett (Baxter) and her students. Despite her initial resistance to his efforts, he charms her and they fall in love.

Rightful owner of the kingdom, the Duchess of Zona, is engaged in a power struggle with the evil General Gurko. Edmond, the son of Monte Cristo, dons many disguises to come to the aid of the Duchess.

A World War II Hollywood propaganda film detailing the dark underside of Nazism and the Third Reich set between two brothers, Kurt and Erik Franken, whom are SS officers in the Nazi party. Kurt learns and exposes the evils of the system to Erik and tries to convince him of the immoral stance that marches under the symbol of the swastika.

Stranded in Africa, Chuck and his pal Fearless have comic versions of jungle adventures, featuring two attractive con-women.

American Steve Kendall, a freighter's radio officer, discovers seaman Carlson sending an unauthorized message ashore as the ship approaches his war-poised homeland. Carlson is shot in cold blood when he jumps ship and Kendall, implicated in the espionage, swims ashore to avoid arrest. A woman he meets at the dock hides him in her apartment, where he learns Carlson was her brother, and they both work in a sabotage ring. Nedra is a singer at Tio's Cafe, and she approaches Tio for help when both the saboteurs and the secret police try to capture Steve.

A hermit's idyllic life on an island is disturbed by the arrival of a bunch of cutthroats.

Suspecting that a safari guide is a wanted killer, undercover policeman Geoffrey Bishop (Richard Fraser) joins a safari led by the suspect for a scientist that hopes to find and prove that a fabled white gorilla is a missing link.

The Unseen Enemy in this wartime meller is Nick (Leo Carrillo), the outwardly effusive manager of a San Francisco waterfront café. To make enough money to ensure his daughter Gen's (Irene Hervey) entree into society, Nick sells his services to a gang of foreign spies, who then use Nick's establishment as a rendezvous point. The plan is to covertly send out a Japanese vessel for the purpose of raiding and destroying American merchant ships. The spies' secret code is hidden in the lyrics of a song called "Lydia", which the unwitting Gen performs on request day after day.