Mr. Moto Collection

Mr Moto encounters mysterious goings-on on a ship bound for Shanghai. He recognises his steward as the murderer of a man in San Francisco, and catches him trying to steal an important letter from the stateroom of another passenger, Robert Hitchings. Hitchings, son of the owner of the shipping line, falls in love with Gloria, who refuses to tell him anything about her life and disappears when they arrive in Shanghai. In Shanghai, Mr Moto uncovers the secret which links the murder in San Francisco, the mysterious letter, and Gloria.

A Japanese man claiming to be Mr Moto, of the International Police, is abducted and murdered soon after disembarking from a ship at Port Said in Egypt. The real Mr Moto is already in Port Said, investigating a conspiracy against the British and French governments. The dead man was his colleague, impersonating him to throw the conspirators off his scent. Mr Moto recognises one of the conspirators as a British Secret Service agent, and together they discover that the gang have mined the harbour in preparation for the arrival of the French fleet. Their aim is to throw the blame onto the British, which may start a second World War.

Mr. Moto has himself imprisoned on Devil's Island so he can help his cellmate escape and thereby get the goods on a gang of international killers.

Bad blood exists between Bill Steele and Frankie Stanton, the leading contenders for the heavyweight title, and a grudge match is scheduled. Steele's knockout victory is tainted by his opponent's untimely death, ostensibly from a concussion caused by hitting the canvas. A post-mortem reveals that poison was somehow introduced into a cut above Stanton's eye although it is unclear how and why. Gambling might seem to be the motive as several of the principle suspects, gamblers Clipper McCoy and Nick Crowder, Stanton's shady manager Jerry Connors, and fight promoter Philip Benton, all seemed to have made wagers on the fight. Benton's spoiled daughter and female reporter Penny Kendall are vying for the affections of Steele, who is now slated to fight for the championship against pugnacious Biff Moran. Lt. Riggs of New York Homicide and Moto, who were spectators at the fight, go on the trail of the murderer following the autopsy results. Moto's prime suspect is a shadowy character named John Howard, who collected on huge bets in four different Midwestrern cities after the Stanton fight. Discovering his real identity will be a key to Moto's TKO of the killer.

Mr Moto competes with a gang of ruthless treasure-hunters for possession of seven scrolls which, when brought together, form a map which reveals the location of the tomb of Genghis Khan, reputed to contain fabulous treasure. Moto already has one scroll, but the rest are owned by Prince Chung and his mother, who consider it a sacred duty to their ancestors to protect the scrolls and the secret of the Khan's tomb.

A young and handsome archaeologist discovers the crown of the Queen of Sheba, and returns with it to a San Francisco museum where it is put on display. Its safety is in doubt as many criminals want the crown -- an international pair of criminals, a San Francisco gangster and his cohorts, and a super criminal known as Metaxa. Mr. Moto is forced to postpone his vacation while he deals with the threat.

Puerto Rico has become the back door by which a criminal syndicate smuggles inexpensive contraband diamonds from South America into the United States, dramatically driving down the price of legitimate gems. After they have ruthlessly murdered a special investigator, Moto is assigned to the case. While sailing to the island he impresses Twister McGurk, a slow-witted but amiable wrestler, with his martial arts abilities and gains a loyal friend and bodyguard. When an attempt on his life fails and another government official is murdered, Moto sends authorities a fake telegram identifying himself as a criminal named Shimura and making him and the Twister wanted fugitives. That ploy allows them to infiltrate the gang and expose the criminal mastermind behind it.

When aviatrix Victoria Mason, who is flying around the world, reaches the small kingdom of Tong Moi, above Siam, she throws a flare into the rear of her plane and parachutes to safety before the plane crashes in flames. The crash is seen by Mr. Moto, leading an archaeological dig, and by American newsreel cameramen Marty Weston and Chick Davis. After Moto helps Vicky, he sends a note about her arrival via carrier pigeon. Vicky is presented to ruler Rajah Ali, who insists above the objections of his high priest Bokor that she stay as his guest. As Marty and Chick shoot footage of them, Bokor objects that this displeases the gods. However, the ruler states that the cinema is not dangerous, and filming proceeds until Keema, his favorite wife, falls dead. While Marty and Chick are taken by Bokor to a hidden temple for a trial before the gods, Moto discovers that a poison dart from a blowgun killed Keema. Deemed guilty, Marty and Chick are about to be thrown into a well, when a fire erupts and an old guru, on a pilgrimage from the Himalayas, emerges from the temple. After he proves his powers to Bokor, he orders the men freed. The next day, in the cave of the temple, the guru discovers cans of explosives in a secret room below. After he subdues one of Bokor's men, the guru removes his mask and reveals himself to be Moto. He then sends a message by pigeon, stating that he has located the munitions base and that Bokor is the leader of the revolt. However, Rajah Ali shoots down the pigeon and, at a celebration that night, serves it to Moto. When Vicky graciously agrees to become the rajah's next wife in his harem, Marty, who is attracted to her, prepares to leave. After Vicky finds information that Moto is a spy and locates his map of the temple, she heads there followed by Bokor. Convinced by Chick that she is in danger, Marty hastens there also, but he is captured along with Vicky. After Zimmerman, the munitions dealer, arrives and captures Chick, Bokor has Zimmerman killed. He then proclaims that his revolt has begun and will not end until every foreigner is driven from Asia. Moto, who has emerged again as the guru, attempts to deflect Bokor's blood-lust, but when Chick is about to be executed, Vicky reveals Moto's identity and, in the confusion that follows, a fight breaks out. With the munitions, Moto and Vicky, who is working for British Intelligence, fight alongside Marty and Chick to stave off Bokor's men. As they run out of ammunition, Rajah Ali arrives with troops and captures Bokor and his followers. When he says that he will execute Moto, Vicky, Marty and Chick, Moto threatens to blow them all up by dropping a torch into the room with the explosives. Marty throws a gun at Rajah Ali, who falls into the room. Moto then lights a fuse of film that he rigged up leading to the explosives, and after they escape, the temple explodes. On a sailboat, Vicky and Marty banter affectionately, as Moto scares Chick with tales of their next adventure together.