Where To Stream The Avengers Earth's Mightiest Heroes! Season 1 Episode 20
The Casket of Ancient Winters
- Aired May 15, 2011
- 30 Min
- Rated 9.0
- Number 22 Of 52 Rated Episodes
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.