Maddie's return upends Split River High; as she adjusts, not everyone welcomes her back; Simon is trapped on the other side while the ghosts search for answers and dark new secrets about the school emerge.

Split River High grows volatile as Maddie faces mounting pressure; buried truths and new dangers are revealed that could change everything for the living and the dead, forcing some to question who they can trust.

New mysteries at Split River High force Maddie, Simon and the ghosts to choose between leaving the past alone or exploring it and triggering unseen dangers; as Nicole joins a new circle, Simon and Wally take a risky leap for answers.

A detention day unearths Split River's buried secrets and hidden history.

Investigation into the high school's "scars" deepens as the search for answers regarding Simon continues. New discoveries threaten the ghosts as Maddie and Simon fight to stay ahead.

As darkness spreads through Split River High, Simon's fate grows more perilous. Maddie confronts a powerful adversary whose dangerous secrets might be the only key to saving him.

After a shocking event, Maddie and Xavier come under suspicion. As the living investigate a corrupt scheme, the ghosts search their scars for clues, Maddie opens up, and someone takes a big leap that could change everything.

The team confronts a dangerous force in a desperate bid to save their friends.