The colonel Daniel Blimp, of the secret British service, travels to Bangkok to investigate the murder of the Brittish Ambassador happened during a holiday in his residence. Blimp receives the help of Keats, agent of the secret service. Both men discover that the man who shot against the Ambassador is blind, and it takes the black skin as a result of a strange phenomenon of mutation.
as Coronel Daniel J. Blimp
as Marion Wentworth
as Bill Sanders
as Tao
as Madame Rita
as Jonathan Keats
as Welbeck
as Byron
as Amoc mutant
as Rose Hotel's recepcionist (uncredited)
as Dra. Carlson (uncredited)
