The Last Man on Earth (1964)
Also based on Richard Matheson’s 1954 novel I Am Legend, The Last Man on Earth stars Vincent Price as Dr. Robert Morgan, a survivor of a global epidemic that turns most of humanity into zombie vampires. Dr. Morgan thinks that he is immune to the disease because he’s previously bitten by an infected vampire bat, which may have introduced a diluted form of the plague into his blood.
Unable to stand sunlight, the zombie vampires featured in the black-and-white sci-fi horror film only come out and prey on the living at night. Forced to hunt and hide, Dr. Morgan goes through a grueling routine every day. Until one day, he carelessly falls asleep at his wife’s grave, awakening to the mutants being upon him.