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.