‘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 IGNAgatha All Along's Incredible Twist Forces Us To Revisit Everything That Came Before Yahoo Entertainment"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