S5·E12 Descent
Core
Aired September 6, 1997
Synopsis
The origin of Mr. Sinister is revealed.
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Frequently Asked Questions
When did Season 5 Episode 12 of X-Men air?
Season 5, Episode 12 ('Descent') originally aired on September 6, 1997.
How long is Season 5 Episode 12 ('Descent')?
The episode follows the standard broadcast runtime for X-Men.
What happens in X-Men Season 5 Episode 12?
The origin of Mr. Sinister is revealed....