Lt. Col. Glenn Manning is inadvertently exposed to a plutonium bomb blast at Camp Desert Rock. Though burned over 90% of his body, he survives, and begins to grow in size. As he grows, his heart and circulatory system fail to keep pace with his growth, and he is gradually losing his mind as a result of reduced blood supply to his brain. He reaches 50 feet tall before his growth is stopped. By this time he has become insane. He escapes and wreaks havoc upon Las Vegas before he is finally stopped. Written by
Teresa E. Tutt <email@example.com>
Not even the U.S. Army can keep her away from the man she loved--but only the U.S. Army can save her from the monster he became!
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Did You Know?
The Colossal Man is never referred to as such in this movie. He's referred to only as Colonel Manning or the Giant. See more
Plutonium was used in the first A-bomb in 1945, not for the first time in the '50s. See more
[Dr. Lindstrom explains to Carol that Glenn's heart isn't growing as fast as the rest of his body
Dr. Paul Linstrom
Now, the reason for this is rather technical, Carol, but to give you a simplified layman's explanation, it might be explained that, since the heart is made up of a *single* cell for all practical purposes, instead of millions of cells like the rest of the organs of the body, it's reacting in an entirely different manner to this unknown stimulus or forces behind this whole thing.