Watch Criminal Minds Online: Season 12 Episode 4

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Did the team manage to find the latest serial killer to terrorize civilians?

That was a key question on Criminal Minds Season 12 Episode 4 when a serial killer was on the loose on the Appalachian trail in rural West Virginia.

Meanwhile on this addictive drama series, Prentiss had some harsh words for one of the members of the team when she tried to make her mark in the wake of her big return. 

Use the video above to watch Criminal Minds online to get caught up with the latest developments for the characters.

Paul Dailly is a staff writer for TV Fanatic. Follow him on Twitter.

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Criminal Minds Season 12 Episode 4 Quotes

I really wish my mind didn't go to these places, but what Trooper Carson found in that bag may have been the unsub's food source.

JJ

It's less about keeping him in than it is keeping other potential victims out,

Lewis