SPOILER WARNING: This story includes major plot details from Episode 8 and 9 of “Agatha All Along,” currently streaming on Disney+.
Agatha Harkness, the coven-less witch, and Billy Maximoff, the son of the Scarlet Witch, reached the end of the Witches’ Road in the two-part finale of “Agatha All Along” — and it very little was as it first seemed.
The episodes — titled…
