Warning: The following contains spoilers for Secret Invasion episode 3.The Marvel Cinematic Universe series Secret Invasion is similar in stakes and tone to the previous MCU movie Captain America: The Winter Soldier. Though the stakes are global, the story is a contained spy thriller focused on a small set of characters. That means that though there are implications for the wider MCU, much of the focus is only on how the series affects Nick Fury and his closest allies. As the Skrulls on Earth number one million, however, and there are at least 100 covert operatives pretending to be human on Earth, other important areas of the MCU could have been infiltrated by them.