When the search for Maddie's killer puts Simon in real jeopardy and exposes Maddie's connection to the living world, Maddie must navigate Split River High's spooky spectral underbelly - first alone, and then with the help of her fellow ghosts.

As Homecoming unfolds at Split River, Maddie finds herself divided between accepting her fate in purgatory and a newly hatched plan to crack a new suspect.

Amongst the sparkly lights of Split River's Homecoming Dance, Operation Find Maddie's Killer goes into overdrive leading to surprising revelations.

The spirits enlist Dawn to help Maddie recall her last living moments which takes a heartbreaking turn. Nicole desperately tries to keep a secret from being revealed. As the spirits begin to ask more questions, an unexpected turn of events takes place within their own.

Questioning their existence, the spirits seek Mr. Martin for answers. Maddie must confront the latest suspect which challenges everything she thought she knew before. Xavier, Claire and Nicole look for answers at an abandoned house. When the truth is finally revealed, Maddie must face unexpected and devastating consequences.