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. Written by Daniel Frankham

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. Written by Daniel Frankham

Chan is on a gambling vacation in Monaco. He is called upon to solve two murders. One is a casino messenger on his way to Paris with a million dollars in bonds. The other is a two-bit Chicago gangster recently tending bar in a Monte Carlo hotel. Everyone is suspect and a third of the dialogue is in French. Written by Ed Stephan

Billie Bronson secretes a package in the trunk of Charlie Chan aboard a New York-bound transatlantic liner. Chan and his number one son, Lee are met at the pier by Inspector Nelson and two rival reporters, Joan Wendall and Speed Patton. Billie, having left the country hurriedly a year ago when sought as a material witness in a political scandal, has returned to blow the lid off the town. She follows the Chans to their hotel and attempts to regain her package from the trunk, only to be interrupted by Lee. She then goes to the Hottentot Club, where candid-camera night is in full progress, followed by Lee. Already present are Joan and Speed. Billie is mysteriously murdered and Charlie is summoned from a police banquet in his honor. Present in the room with the body are club manager Johnny Burke; club dancer and Burke's girl-friend Marie Collins and the two reporters. While seeking a motive for the murder, a second killing is discovered in Charlie's hotel room, the package is missing from Charlie's trunk and it is realized that it must have contained her diary. Charlie neatly puts together a few scattered clues and names.......as the killer. Written by Les Adams

A novelist friend of Charlie's appears to have committed suicide. At the international Exposition held on San Francisco Bay's Treasure Island Charlie shows that Zodiac, a phony mystic who blackmails clients, is the culprit. Written by Ed Stephan

Gravelle, a former baritone believed dead after an opera house fire, has been languishing in a mental institution for the past seven years, an anonymous amnesiac. When he fortuitously sees a news story about his former wife's current appearance at the local opera, his memory returns. He escapes and, disguised in costume, seeks revenge for a failed attempt on his life years earlier. When the guilty parties are found stabbed to death, Charlie Chan and son Lee try to find out if the dangerous fugitive is the one responsible. Written by duke1029

On his return to China, Charlie is honored at a Shanghai banquet for his many accomplishments. Prior to his speech Sir Stanley Woodland, a prominent official in the colony, confides to Charlie that he has discovered some sinister activities and wants to share the information with the detective as soon as they are alone. When Sir Stanley is silenced by a booby-trapped box, Charlie seeks to discover the undivulged secret as well as the killer. Along with Col. Watkins, the police commissioner, and G-Man James Andrews, Charlie works to expose an international opium-smuggling ring operating out of Shanghai. With the help of son Lee, he survives a kidnapping and murder attempt while exposing the identity of the head of the drug ring. Written by G. Taverney (duke1029@aol.com)