Inhuman Nature- Spencer Reid

"When you stare into the abyss long enough... sometimes it stares back with familiar eyes." - Friedrich Nietzsche

The walls of Quantico have held killers, spies, and the darkest minds the FBI has ever profiled but never someone like Seraphina Fairchild.

Found at the scene of a brutal murder. she's brought for questioning. Calm, composed, and uncooperative, Seraphina seems more soldier than civilian. Every question from the BAU meets a carefully constructed answer too careful for someone who's supposed to be in shock.

Dr. Spencer Reid can't read her. She doesn't fit any known pattern no psychosis, no trauma response, no lies he can prove. Yet there's something off about her eyes, the way she moves, the scars on her hands that don't match any record.

While the team hunts for a supposed serial killer, Seraphina hides a truth no one is prepared to face: the murders aren't human. And if she can't contain what's coming, neither will they.

Criminal minds x Shadowhunters