She-Wolf of London

She-Wolf of London is a 1946 American mystery and horror film directed by Jean Yarbrough. It stars June Lockhart and Don Porter. The film is set in London in the early 20th century, where a series of murders have recently occurred. An aunt then tells an innocent young lady that the blood of a werewolf runs in her family and that she is responsible for the deaths. The woman then immediately ends her engagement, leading her partner to begin investigating the strange case on his own.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.