Showrunner Jac Schaeffer explains why Agatha stays center stage in ‘Agatha All Along’ finale without Wanda

​In the final episode, titled “Maiden Mother Crone,” Ghost Agatha and Billy set off to search for his twin brother, Tommy, whose soul now inhabits a young drowning victim. While Schaeffer didn’t specify where this storyline might continue, she hinted that Agatha’s role as Billy’s guide was central to her character arc.