‘Agatha All Along’ Showrunner Talks Billy’s Backstory, Evan Peters’ MCU Return & What’s To Come On The Witches Road DeadlineAgatha All Along: The Tower Reversed Signaled William Kaplan’s Death and Sparky’s Murderer Returns IGN“Agatha All Along” Team on Billy Maximoff’s Return, Evan Peters Cameo and More VarietyThe best part of Agatha All Along is the way Agatha can’t stop poking the bear Polygon‘Agatha All Along’ Showrunner Talks Episode 6: Billy’s Backstory, Agatha’s Secret and That Cameo TheWrap