Creature with the Atom Brain is a 1955 American zombie horror science fiction film directed by Edward L. Cahn and starring Richard Denning. American gangster Frank Buchanan (Michael Granger) forces German scientist Wilhelm Steigg to create zombies by resurrecting corpses through atomic radiation in order to exact revenge on his enemies.

https://en.wikipedia.org/wiki/Creature_with_the_Atom_Brain_(film)