Trivia

Filming began with Margaret Lindsay cast as Sally Keating. Lindsay left the project after her close friend Thelma Todd's mysterious death from carbon monoxide poisoning.

Warner Bros. created the advertising marketing ploy "Clue Club" to increase audiences attending its crime mystery/drama movies. Twelve titles showing the Warner Bros. "Clue Club" promo footage were released from 1935 to 1938.

Clue Club #1: The White Cockatoo (1935)

Clue Club #2: While the Patient Slept (1935)

Clue Club #3: The Florentine Dagger (1935)

Clue Club #4: The Case of the Curious Bride (1935)

Clue Club #5: The Case of the Lucky Legs (1935)

Clue Club #6: The Murder of Dr. Harrigan (1936)

Clue Club #7: Murder by an Aristocrat (1936)

Clue Club #8: The Case of the Velvet Claws (1936)

Clue Club #9: The Case of the Black Cat (1936)

Clue Club #10: The Case of the Stuttering Bishop (1937)

Clue Club #11: The Patient in Room 18 (1938)

Clue Club #12: Mystery House (1938)

Bayard Thatcher's demand of $25,000 equates to nearly $500,000 in 2021.

This film's earliest documented telecast took place in Columbus, Ohio Saturday 14 December 1957 on WTVN (Channel 6).