Charlie Chan at Treasure Island is a 1939 film directed by Norman Foster, starring Sidney Toler as the fictional detective Charlie Chan, takes place on Treasure Island during San Francisco's Golden Gate International Exposition.

When three bank employees are killed with cobra venom, Detective Chan recalls an oddly similar case ten years earlier in Shanghai. Benson Fong and Mantan Moreland, return as Tommy "Number Three Son" Chan, and Birmingham Brown.

Charlie Chan in Honolulu directed by H. Bruce Humberstone in 1938, starring Sidney Toler as the detective Charlie Chan. The film is the first appearance of both Toler as Chan and Victor Sen Yung as "number two son" Jimmy.

While Charlie is distracted with the birth of his first grandchild, son Jimmy impersonates his father in order to investigate a murder aboard a freighter in the harbor.

Charlie Chan in Egypt released in 1935 is the eighth of 16 20th Century Fox Charlie Chan films starring Warner Oland in the title role.

While investigating the theft of antiquities from an ancient tomb excavation, Charlie discovers that the body of the expedition's leader concealed inside the mummy's wrappings.

The Black Camel, a pre-Code mystery movie based on the novel by Earl Derr Biggers. Warner Oland as detective Charlie Chan for the second time, it is the sole surviving title of the first five Chan films starring Oland.
The unsolved murder of a Hollywood actor several years earlier and an enigmatic psychic are the keys to help Charlie solve the death of a beautiful actress

The Courageous Dr. Christian is a 1940 film directed by Bernard Vorhaus, starring Jean Hersholt, Dorothy Lovett and Robert Baldwin.

Dr. Christian appalled by the harsh living conditions of homeless inhabitants of Squatterstown, lets one of the homeless, Dave Williams, live with him. He then goes on to ask the city to build housing for the poor.

Murder Over New York directed by Harry Lachman in 1940, starring Sidney Toler as Charlie Chan. Shemp Howard plays "Shorty McCoy" in an uncredited appearance.
On a flight to New York for an annual police convention, Chan encounters an old friend, Hugh Drake, now a member of military intelligence trying to track down a sabotage ringbehind the crash of a bomber and its pilots the day before, led by a Paul Narvo.

Meet Dr. Christian directed by Bernard Vorhaus in 1939 is the first of six films in the Dr. Christian series.
A Minnesota country doctor played by Jean Hersholt saves the life of the mayor's daughter.

Charlie Chan in Panama directed by Norman Foster in 1940, starring Sidney Toler. Thought to be an unaccredited remake of Jacques Deval's novel "Marie Galante", which was made into a film directed by Henry King and produced by Fox in 1934.

Inspector Chan investigates a group of travelers, one of whom is a saboteur

Charlie Chan is an agent of the U.S. government assigned to investigate the mysterious death of an inventor.
Charlie Chan in the Secret Service starring Sidney Toler as Charlie Chan. It is the first film in the series by Monogram Pictures after the purchase of the rights from Fox. This film is the introduction of Number Three Son, played by Benson Fong and taxi driver Birmingham Brown who later becomes Chan's chauffeur, played by Mantan Moreland.

Charlie Chan at the Circus is the 11th film produced by Fox starring Warner Oland as Charlie Chan. A seemingly harmless family outing drags Chan into a murder investigation

Sherlock Holmes and the Secret Weapon from 1942 is the fourth in the series of 14 films which placed the characters of Sir Arthur Conan Doyle into the 1940s. The film is an adaptation of Conan Doyle's short story "The Adventure of the Dancing Men," although the only element retained from the original story is the dancing men code. Rather, it should be seen as a spy film taking place on the background of the ongoing Second World War. The film concerns the kidnapping of a Swiss scientist by Professor Moriarty, to steal a new bomb sight and sell it to Nazi Germany. Sherlock Holmes and Dr. John Watson have to crack a secret code in order to save the country.