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Season 1 Episode 20
Avengers: Earth's Mightiest Heroes
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Season 1 Episode 20
The Casket of Ancient Winters
May 15, 2011 on DiSNEY XD at 10:00 AM
Summary
The Avengers must stop Malekith the Accursed after he unleashes an everlasting winter on Earth. Once Malekith is defeated Thor learns he has been barred from returning to Asgard.
