Voyage to the Bottom of the Sea (1964)

S3E2 Werewolf

While studying a radioactive volcano, two scientists are suddenly ambushed by a wolf. One of them is killed, and the other becomes infected with a virus that transforms him into a werewolf and back to human. Admiral Nelson also encounters the virus, putting him at risk. Now, the crew is tasked with the urgent mission of locating a vaccine to save him and prevent further chaos.