A new The Lodger (Ivor Novello) is suspected by the landlady (Mary Alter) and her husband (Arthur Chesney) as a possible notorious "serial killer" but Their then-model daughter, Daisy Bunting (Joan Tripp), is drawn to him. Jealous of Daisy's boyfriend, Detective Joe Bates (Malcolm Keene), at the instigation of his landlady, he gets a search warrant and breaks into his room. Officers then found a handgun and a map showing the locations of past killings, as well as a photo of the first victim. The Lodger argued that the girl was her sister and he was just looking for the killer, but police arrested him anyway. With Daisy's help, he escaped, but was cornered after being found in handcuffs in a bar.
The film has a memorable shot that Hitchcock called a way to replace sound in a silent film when "The Lodger's gloved right hand slowly slides down the Stair handrail
.
