Garcia helps out - Criminal Minds Season 12 Episode 9

Garcia helps the BAU team search for Tommy Yates' latest victim.
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Rossi gives a lesson - Criminal Minds Season 12 Episode 9

Rossi uses serial killer Tommy Yates as a case study in a profiling class.
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New agent Stephen Walker - Criminal Minds Season 12 Episode 9

New BAU agent Stephen Walker assists Rossi with his profiling class.
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The Birthday Call - Criminal Minds

Rossi gets a call on his birthday from serial killer Tommy Yates on Criminal Minds. "Profiling 202" is the ninth episode of the show's 12th season.
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Criminal Minds Season 12 Episode 9 Quotes

I used to think they were all monsters too. But they're not. They're just men, and occasionally women. Not to respect the people I hunt would be like a soldier not respecting his enemy, and that mistake costs lives.

Rossi

Walker: Agent Rossi was a mentor when I was coming up, so I'm happy to be here.
Prentiss: He said you're one of the most naturally gifted profilers he's ever seen.