Title: The Beast Within Author: rivermoon1970 Fandom/Genre: Criminal Minds/Sentinel Fusion Relationship(s): Aaron Hotchner/Spencer Reid Content Rating: NC-17 Warnings: Mentions of Incest Summary: Aaron Hotchner and Spencer Reid are the FBI's foremost Sentinel/Guide team and when it's suspected that a Sentinel has had a psychotic break and is killing other Sentinels their team is called in … Continue reading The Beast Within – A Criminal Minds/Sentinel Fusion Story