In a Miami, an UnSub has been killing people. The team visits the house of the latest victim in order to look for clues.
Then they pay a visit to the soup kitchen nearby where they meet Jimmy Mercado, a local who knew the victim.
Jimmy tells them about Santeria, but explains that human mutilation and sacrifice are not parts of the religion.
A professor tells the team that he is almost finished writing the only book on the subject.
The meeting is interrupted with the news that Jimmy Mercado is dead.
The team returns to find a full Santeria service is going on.
Julio is dragged back to the station for further questioning. Turns out he was in jail for 15 years after being part of a gang that was known to cut off body parts.
Reid realizes that he is not their man. His protégé, Elian, does not seem so clean.
Our team uncovers drugs and remnants of the victims in his bedroom, and the child seems to have fled the scene.
He may have been framed. A bloody footprint conveniently matched a shoe found in Elian’s room. Too well.
Prentiss and Morgan figure it out first: it’s professor Walker, trying to get press for his book, who did the crimes and framed Elian.
Reid then stumbles upon the killer and a tied-up Julio. He manages to outmaneuver him, and the rest of the team shows up to arrest the UnSub and free Julio and Elian.
Meanwhile, Dr. Reid is in a hospital getting an MRI of his brain. He has been suffering from very bad headaches and even some hallucinations. He is diagnosed normally in the end.
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