Calling all Mutants! Every Tuesday, Marvel.com will stream episodes from the "X-Men" animated series that launched in 1992. Relive the adventure, excitement and that awesome theme song every week! Watch episode 75, "
In London during England's Victorian era, two scientists, Dr. James Xavier and Dr. Nathaniel Essex, hotly debate Charles Darwin's theory of natural selection. Essex believes mutants are the next genetic step forward and begins a bizarre experiment involving mutant evolution. The origin of Mr. Sinister is revealed, as Dr. Xavier attempts to stop Essex before he goes too far.
Check back on Marvel.com next Tuesday, October 2 for the series finale!
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