Lloyd Corrigan replaced Forrester Harvey who died prior to any of his scenes were shot. This was also Martin Kosleck's final role at Universal.
Filming completed on Christmas Eve 1945.
Largely shot on Universal's old "Hacienda" set, used on many of the studio's "B" westerns.
Part of the original SHOCK THEATER package of 52 Universal titles released to television in 1957, followed a year later with SON OF SHOCK, which added 21 more features.
Released on May 17, 1946 as part of a double bill with The Cat Creeps. Universal Pictures, unlike most major studios, lacked a proprietary theater chain and often sold it's B-picture horror/mystery pictures as double bills, making weak pictures more attractive and economical for independent theaters to advertise.
The film was shot between December 8-21, 1945 but retakes required several members of the cast, including June Lockhart and Don Porter to work through Christmas eve.
There is no werewolf in this film.