The BAU’s newest profiler has a secret buried deeper than any unsub she’s hunted. SSA Y/N O’Connell built her career studying monsters after one destroyed her childhood. For fifteen years, the murder of her parents remained unsolved—known only to David Rossi, the agent who never gave up on her case. Then Spencer Reid returns from prison. Different. Darker. Dangerous in ways that make the rest of the team uneasy. He doesn’t trust easily anymore. Doesn’t let people close. Until Y/N. As buried evidence resurfaces and a killer from the past begins circling again, Spencer becomes determined to protect the woman slowly unraveling every wall he has left. Even if it destroys him in the process.