She-Wolf Of London (1946)

In London at the beginning of the twentieth century, Phyllis
Allenby is a young and beautiful woman who is soon to be married
to barrister and boyfriend Barry Lanfield. Phyllis is living at
the Allenby Mansion without the protection of a male, along with
her aunt Martha and her cousin Carol and the servant Hannah. As
the wedding date approaches, London is shocked by a series of
murders at the local park, where the victims are discovered with
throats ripped out. Many of the detectives at Scotland Yard begin
murmuring about werewolves, while Inspector Pierce believes the
opposite and suspects strange activity at the Allenby Mansion
(which is near the park), where the "Wolf-Woman" is seen prowling
at night and heading for the park.


Phyllis becomes extremely terrified and anxious, since she is
convinced that she is the "Wolf-Woman", deeply believing in the
legend of the so-called "Curse of the Allenbys". Aunt Martha
tries to convince Phyllis how ridiculous the legend sounds, while
she (Aunt Martha) and Carol are suspicious in their own ways.
Phyllis each day denies Barry visiting her, and when a suspicious
detective is murdered soon after he visits the mansion in the
same way the other victims perished, Barry begins believing that
something else is going on beside the so-called "Werewolf
murders", and makes his own investigations both of the park and
the mansion. It turns out that Aunt Martha did the attacks to
convince Phyllis she was insane, and belonged in an asylum rather
than married to Barry, so Martha and her daughter could remain
living in the mansion.