Warning: The following contains spoilers for Secret Invasion Episode 2.Secret Invasion episode 2, “Promises” has a dual purpose. Not only does it pick up right after the events of the series premiere, but it also fills in some of the gaps in the Marvel Cinematic Universe following the first appearance of Skrulls in Captain Marvel. While filling in those gaps and moving the story forward, the episode also gifts the audience with a few Easter eggs.