A young bride-to-be suspects she’s a lycanthropic killer when a series of mysterious attacks occur near her ancestral home.
Turn-of-the-century London. At Scotland Yard, Detective Latham speaks to the Inspector about a man attacked in the park. The victim survived, and reports it was a woman who did the deed. Latham entertains the idea it could be a werewolf. The Inspector thinks he’s crazy.
Engaged couple Phyllis Allenby and Barry Lanfield are enjoying a horseback ride in the park near the Allenby mansion and discussing their wedding set for the following week.
They come across the cops investigating the crime scene. Phyllis gets squirrelly. They head for home. At the mansion, Phyllis’ cousin asks housekeeper Hannah, on her way to the market, to deliver a note which will be retrieved by her lover. Sure thing. Unfortunately, Carol’s mother, Martha, witnesses the hand-off and stops Hannah, demanding the note. Mother then ushers her daughter into the house and says she can never marry penniless artist Dwight Severin. She then explains they aren’t related to Phyllis. Martha was in love with George Allenby, but he married Phyllis’ mother and Martha married someone else. When her husband died, Martha became the housekeeper at the mansion, daughter in tow. Phyllis is the sole heir.
When Barry and Phyllis return, the dogs bought for protection are menacing Phyllis, they don’t like her. That night, the dogs are riled up, putting Phyllis on edge. Aunt Martha stops by and offers to fix the poor girl a glass of warm milk to help her sleep. She heads to the kitchen, then Carol sweeps down intending to meet Dwight. She’s caught by Mama, who sends her up to bed before taking the milk to Phyllis. A little later, a cloaked figure exits the house. In the nearby park, a pair of constables hear the cry of someone in distress.
The following morning, Phyllis wakes to discover blood on her hands and mud on her slippers. When Auntie pops in to ask how she slept, her distraught niece shows her the incriminating evidence and wails it’s the Allenby curse (a vague curse never fully explained). Aunt Martha tells her to play it cool, act natural, especially in front of Carol.
At breakfast, Carol joins the two and reads aloud from the paper the news about a ten-year-old boy who was killed in the park the previous night. Phyllis freaks out. When Barry arrives later, Phyllis refuses to see her affianced. Det. Latham stops by for a brief talk with the lady of the house about the goings-on. That evening, the police are patrolling the park, including Latham, who keeps crying werewolf. Like the Inspector, the constables also think he’s crackers. The mystery woman slips from the house again and Latham is attacked, dropping dead before he can gasp out who assailed him.
Carol offers a sympathetic ear to not-cousin cousin Phyllis, who doesn’t care to discuss her troubles. Carol goes out riding with Barry and suggests he disregard her mother and talk to Phyllis, which he does. He convinces his betrothed to go out for a drive, but she quickly gets on the Allenby curse nonsense again, without revealing details of the nocturnal happenings.
Another night, another expedition, but the woman is followed by Barry. They head to the park, which is crawling with cops. A lot of misdirection ensues. A man is seen sitting on a park bench in the foggy night. Two officers run into Barry, who’s some big-wig lawyer. They hear the man shout out and rush to his aid. He explains he was attacked from behind, definitely by a woman, but he didn’t see the face, and remarks she was quite strong. Conveniently, Carol makes the scene, her lover Dwight being the man who was attacked. She explains they had a rendezvous. The police suggest they head to the station to sort things out.
The following night, Phyllis heads to Carol’s room with a bundle, saying she needs to talk. A short time later, as Carol is heading out of the house, she’s stopped by her mother. Going to meet her lover? How brazen! No, to the police. No, she can’t do that, think of poor Phyllis!
Obviously, there is no werewolf in this, but, rather, a female murderer, making it a mystery instead of a horror flick. Directed by Jean Yarbrough (House of Horrors), the cast is enjoyable; June Lockhart (Lassie, Lost in Space) is the wide-eyed ingenue Phyllis, and Don Porter (Gidget) plays her intended Barry Lanfield. Sara Haden props things up as stern, but concerned, matriarch Aunt Martha. Jan Wiley, as Carol, and Eily Malyon as Hannah round out the cast of Allenby Hall residents. As mentioned, a lot of misdirection is going on, with cagey glances and questionable behavior casting suspicion on the four ladies living in the house. Will Carol make a play for Barry? Is Phyllis a maniacal killer? Is Hannah being devious? Just how much does Aunt Martha know? The nighttime park scenes are appropriately foggy and the interior of the mansion has some nice baroque details. The middle of the movie can seem a bit tedious, but it’s worth sitting through for the conclusion, including a key scene in the finale that makes use of Dutch angles, to great effect. I rate it 4.5 out of 10.