Maddie and the ghosts confront Mr. Martin, ultimately trapping him in the afterlife; new information leads to a chase through the school's scars, delaying Maddie's return to the living world and putting her body in jeopardy.

Fugitive Janet is haunted by her past as the ghost group continues searching for Mr. Martin inside Split River High. Simon tells the living kids about Janet's body-snatching. A fire at a dilapidated farmhouse leaves Maddie's fate unclear.

A relentless Sandra is desperate to know her daughters fate, as Janet in Maddie's body wreaks havoc in the living world. Simon and friends search for Janet/Maddie in an unlikely place, as the ghosts decode Janet's past.

Janet/Maddie agrees to have Maddie's friends over for dinner and the tense meal ends with Janet realizing her cover is blown. Meanwhile, Maddie explores the school's "scars" and uncovers intel about Janet that shakes her resolve.

Janet is finally ready to give answers. Mr. Martin hatches a plan, Maddie reevaluates her relationships with Wally and Simon, and Quinn makes a discovery.

Maddie confronts Mr. Martin, who flees. Janet, in Maddie's body, returns to her family's now dilapidated farmhouse, triggering memories. A conflicted Simon struggles with his desire to help Maddie and protect his own grasp on reality.

Janet/Maddie returns home to a shocked and relieved Sandra. The ghosts discover the objects from their deaths unlock hidden spaces. A mandatory school event uncovers tension between the living kids who are more concerned about Janet's return.

Maddie and the ghosts find a link between their scars while Simon and team go on a mission where tensions rise with the arrival of an unexpected visitor.