A young newspaper reporter, Walter Garrett, stumbles upon a sensational murder case involving a famous actress, Angela Merrova, who is found dead in her apartment. Seeking a scoop, Walter immediately calls in his editor and the police, only to be met with disbelief. The mystery deepens when the supposedly murdered Angela appears very much alive the next day. Puzzled, Walter enlists the help of his friend, Dr. Mike Rhodes, to delve deeper into the bizarre circumstances surrounding Angela's death and resurrection. The investigation leads them to Dr. Francis Flegg, an enigmatic scientist whose unorthodox experiments have pushed ethical boundaries. As they dig further, they encounter Dr. Maurice Xavier—Flegg's peculiar and secretive assistant—whose unsettling demeanor raises suspicions.

Determined to uncover the truth, Walter and Dr. Rhodes follow a trail of clues that suggests a diabolical scheme involving blood transfusions and reanimation. As more victims begin to appear with similar bloodless conditions, their pursuit becomes increasingly dangerous. Time is running out, and Walter must piece together the puzzle before more lives are lost to the sinister experiments. The investigation takes unexpected turns, forcing Walter and Dr. Rhodes to confront terrifying possibilities and suspicious figures in their desperate quest to halt the macabre activities. With mounting tension and intrigue, the hunt for answers becomes a race against time to stop an otherworldly threat lurking in the shadows.