Starring Vincent Price as Dr Robert Morgan, this film shows what happens when an airborne disease turns everyone into vampires.
Like every other early zombie movie, these vampires are very slow and can be defeated by shoving them aside.
Dr Morgan locks himself in his house at night, covering his doors with garlic and mirrors. He carves wooden stakes to drive into the vampires whenever he comes across one.
Every night, there is one particular vampire who calls for Morgan again and again. This is his lab partner.
After being alone for many months, Dr Morgan stumbles across a woman who seems to be fine. He brings her into his house to discover there is a clan of humans who have discovered a way to keep the vampire disease from taking them over.
This movie ends with these vampire/human hybrids chasing Dr Morgan down and killing him.