Black Friday (1940)

Black Friday is a lean, lively little shocker that fuses mad-science dread with gangster grit, the kind of brisk 1940s programmer that wastes no time getting to the good stuff. Boris Karloff brings a cool, persuasive intelligence to the doctor at the center of it all, while Stanley Ridges delivers the real show: a startling, seamless swing between genial professor and coiled menace that gives the film its crackling charge. Arthur Lubin keeps the tone taut and shadowy—part crime picture, part horror mood piece—so the suspense feels constant even when the story turns slyly cynical. It’s not for viewers craving big set pieces or deep psychological realism, but if you want a fast, atmospheric classic with great performances and a wicked hook, this one earns its title.

Black Friday wants to mash up mad-science horror with a snappy gangster mystery, using the “two minds in one body” hook as a Jekyll-and-Hyde engine for crime and chaos. The problem is it never quite commits to being truly scary or truly hardboiled, so the pacing can feel choppy and the story more like a clever setup than a satisfying payoff. If you’re coming for a big Karloff-Lugosi showcase, temper your expectations: Karloff does solid, controlled work, but Lugosi is frustratingly underused and the film doesn’t reach the iconic heights of their better pairings. Still, Stanley Ridges’ dual-role performance is the main reason to watch, and if you enjoy brisk, old-school B-movie oddities with mild violence and a pulpy premise, this one can scratch that itch.