Watch Criminal Minds Online: Season 12 Episode 18

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What did Reid do wrong?

That was addressed on Criminal Minds Season 12 Episode 18 when he made a rash decision in prison that had adverse effects for himself and his fellow prisoners. 

Tracking a Legend - Criminal Minds Season 12 Episode 18

Meanwhile, the BAU investigated when an urban vampire in New York who was kidnapping victims at night and holding them in the underground sewer system. 

Did the person have a link to someone within the BAU?

Use the video above to watch Criminal Minds online to get caught up with the latest drama for the characters on this hit CBS drama series. 

Paul Dailly is the Associate Editor for TV Fanatic. Follow him on Twitter.

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Criminal Minds Season 12 Episode 18 Quotes

Not a single person in here can admit that they're terrified.

Reid [to Rossi]

How can I be substantial if I do not cast a shadow? I must have a dark side also If I am to be whole. -- Carl Jung