Agatha All Along is giving us some answers, while raising new questions, in episode 4 this week, though it does seem to be slowly spelling something out. That would be the true identity of Aubrey Plaza’s Rio Vidal, a Green Witch. Or rather, the Green Witch, as she says.

Agatha All Along Episode 4 hints at an old connection between Rio Vidal and Agatha Harkness. Here's everything you need to know about it.

Not too much is known about Rio Vidal yet. She was introduced in the first episode of Agatha All Along, posing as a detective in the spell that Wanda had put Agatha under. From the start, she and Agatha have a bad history.