Mr. Wong, Detective 1938 colorized (Boris Karloff)

When a chemical manufacturer is killed after asking detective James Wong to help him, Wong investigates this and two subsequent murders. He uncovers an international spy ring hoping to steal the formula for a poison gas being developed by the first victim's company.

Boris Karloff as James Lee Wong
Grant Withers as Police Captain Sam Street
Maxine Jennings as Myra Ross
Evelyn Brent as Olga Petroff
George Lloyd as Devlin
Lucien Prival as Anton Mohl
John St. Polis as Carl Roemer
William Gould as Theodore Meisle
Hooper Atchley as Christian Wilk
John Hamilton as Simon Dayton