The signature whistling heard at the beginning of each of the Whistler movies was provided by Dorothy Roberts, accompanied by the theme's composer Wilbur Hatch and his orchestra.
This film series is based on the radio program "The Whistler" that aired from May 16, 1942 to September 22, 1955 on the CBS radio network.
The fourth of eight "Whistler" films released by Columbia from 1944 to 1948.