Anecdotes

The only film featuring Basil Rathbone and Nigel Bruce in which they do not play Sherlock Holmes and Dr. Watson.

"Lux Radio Theater" broadcast a 60-minute radio adaptation of the movie on February 10, 1947, with Joan Fontaine reprising her film role.

One of over 700 Paramount Productions, filmed between 1929-49, that were sold to MCA/Universal in 1958 for television distribution, and have been owned and controlled by Universal ever since. Its earliest documented telecast took place in Seattle Saturday 11 April 1959 on KIRO (Channel 7), followed by Asheville 17 April 1959 on WLOS (Channel 13), by Milwaukee 24 April 1959 on WITI (Channel 6), by St. Louis 13 June 1959 on KMOX (Channel 4), by Phoenix 14 June 1959 on KVAR (Channel 12), by Boston 2 August 1959 on WBZ (Channel 4), by Chicago 29 August 1959 on WBBM (Channel 2), by Indianapolis 10 October 1959 on WFBM (Channel 6), by San Francisco 4 December 1959 on KPIX (Channel 5), by Johnstown 6 December 1959 on WJAC (Channel 6) and by Los Angeles 12 March 1960 on KNXT (Channel 2). At this time, color broadcasting was still in its infancy, limited to only a small number of high rated programs, primarily on NBC and NBC affiliated stations, so most vintage film showings were still in B&W, excluding WFBM, an NBC affiliate in Indianapolis, who broadcast this one in color. Otherwise, viewers were not offered the opportunity to see these films in their original Technicolor until several years later. It was released on DVD 28 August 2014 as part of the Universal Vault Series and has since enjoyed occasional airings on Turner Classic Movies. Unfortunately repeated reports of a severely inferior restoration of its original three-color Technicolor cinematography have both disturbed and disappointed a new generation of film enthusiasts who have come to expect something better.

Audrey Westphal's debut.

Joan Fontaine had appeared in another movie of a Daphne Du Maurier novel, "Rebecca" in 1940, and her sister Olivia de Havilland would star in a movie of Du Maurier's "My Cousin Rachel" in 1952.