WandaVision Episode 5 ends with a major cameo that reframes our understanding of the Marvel Cinematic Universe! How did [SPOILER] get to Westview, who summoned them, and who are they, really? To try Shudder free for 30 days, go to http://shudder.com​ and use promo code WANDAVISION. Thanks to BLUECHEW for sponsoring http://go.bluechew.com/inside-marvel Catch us live on Stereo, http://stereo.com/NewRockstars

SPOILERS ahead!

WandaVision Episode 5 escalates the Westview crisis with Wanda openly hostile to SWORD and Director Hayward, confirming her theft of Vision's corpse after Avengers Endgame, and the rapid aging of her sons Billy and Tommy. But most mysteriously, the final scene reveals the return of Wanda's brother Pietro aka Quicksilver, but played by EVAN PETERS, from the Fox X-Men movies, not Aaron Taylor Johnson, who played Pietro in the MCU. WTF is going on here? Has the Marvel Multiverse crossed over the MCU with the Fox X-Men film universe? Or is this "Pietro" a disguise by a darker entity like Mephisto? In this episode of #InsideMarvel, Erik Voss and Jessica Clemons react to this game-changing episode and break down the biggest WTF questions you have. Who was the "aerospace engineer" Monica referred to, and what is her history with Captain Marvel?

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