The Whistler (1944)
Source: Motion Picture Herald, March 1944
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The 8 Whistler movies of the 1940s:
1944 — The Whistler
1944 — The Mark of the Whistler
1945 — The Power of the Whistler
1945 — Voice of the Whistler
1946 — Mysterious Intruder
1946 — The Secret of the Whistler
1947 — The Thirteenth Hour
1948 — The Return of the Whistler