The four actors played the Rance family, who spent Season 1 suffering due to demonic influence in their house.
Geena Davis, Alan Ruck, Hannah Kasulka, and Brianne Howey will not return to The Exoricst as regulars when Season 2 debuts in the fall.
TVLine does report that some or all of them could turn up as guest stars in Season 2, however, so the Rance family may not be gone for good.
Since Brianne Howey just signed on to appear in Mark-Paul Gosselaar’s vampire drama pilot on Fox, she might be the most likely member of the Rance family to turn up again.