Ghosts has revealed the spirit that dragged Isaac into the dirt. Mary Holland (The Big Door Prize, Veep) will play the Puritan ghost Patience in the upcoming fourth season, announced during the show’s San Diego Comic-Con panel. Dean Norris (United States of Al, Breaking Bad) will guest-star as the estranged father of Rose McIver’s character, Samantha.

Patience, who died in the late 1600s, was abandoned underground by Isaac when he sneezed and let go of her hand, causing her to be lost in the dirt since 1895. She became a “feral creature” and took revenge on Isaac in the Season 3 finale. In the Season 4 premiere, viewers will meet Patience and discover her plans for Isaac. During her life, Patience was severe and judgmental even by Puritan standards and was expelled from her village for being “a bit too much.”

Sam’s dad, Frank, is described as kindly and well-meaning but shares a troubled history with Sam. Frank arrives at Woodstone with his new girlfriend, marking his first visit in years. Frank and Sam have struggled to stay close since Frank divorced Sam’s mom when Sam was 10. They are cordial on the surface, but Sam resents her father for his absence in her life. Sam is compelled to confront these feelings when a new ghost at Woodstone forces her into an awkward conversation with her dad.

Ghosts Season 4 premieres Thursday, Oct. 17 at 8:30/7:30c on CBS.