'Criminal Minds': The Search for the Chameleon Puts an Agent in the Hospital (PHOTOS)

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Under the Skin
Cliff Lipson/CBS
Under the Skin
Cliff Lipson/CBS

“Under the Skin”

Reid (Matthew Gray Gubler), Luke (Adam Rodriguez), Prentiss (Paget Brewster), Garcia (Kirsten Vangsness), and Simmons (Daniel Henney)

Under the Skin
Cliff Lipson/CBS

Tara (Aisha Tyler) and Luke

Under the Skin
Cliff Lipson/CBS

JJ (A.J. Cook)

Under the Skin
Cliff Lipson/CBS

Rossi (Joe Mantegna)

Under the Skin
Cliff Lipson/CBS

What’s in the photo?

Under the Skin
Cliff Lipson/CBS

Should we assume they’re looking at something disturbing?

Under the Skin
Cliff Lipson/CBS

JJ and Reid

Under the Skin
Cliff Lipson/CBS

JJ and Reid

Under the Skin
Cliff Lipson/CBS

Hmm…

Under the Skin
Cliff Lipson/CBS

What’s on the rock?

Under the Skin
Cliff Lipson/CBS

What’s Rossi looking at?

Awakenings
CBS

“Awakenings”

Uh-oh…

Awakenings
CBS

Reid and Rossi

Awakenings
CBS

Rossi, Prentiss, Tara, and Garcia

Awakenings
CBS

Tara and Luke

Awakenings
CBS

Who’s in the body bag?

Awakenings
CBS

Spencer and Diana (Jane Lynch) Reid

Awakenings
CBS

Good news?

Awakenings
CBS

Rossi, Prentiss, Garcia, and Luke

Awakenings
CBS

In Garcia’s office

Awakenings
CBS

Luke and Simmons

Awakenings
CBS

Rossi visits Roberta Lynch (Sharon Lawrence)

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Criminal Minds is kicking off its final season by hunting down an elusive serial killer and bringing back several guest stars.

The first two episodes of the 15th season air back-to-back on January 8, and in the premiere, "Under the Skin," the BAU investigates an UnSub with striking similarities to Rossi's (Joe Mantegna) latest obsession, The Chameleon, a.k.a. Everett Lynch (Michael Mosley), who nearly killed him before disappearing.

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13 'Criminal Minds' Cases That Got Personal for the Team (PHOTOS)

The members of the BAU and their loved ones have been targeted over the years.

Then in the second hour, "Awakenings," a member of the BAU lands in the hospital, and the rest of the team searches for Lynch and his daughter, Grace (Alex Jennings). Plus, Reid (Matthew Gray Gubler) has a meaningful visit with his mother, Diana (Jane Lynch), while she's experiencing a period of lucidity.

And of course, we have to wonder what will come of JJ's (A.J. Cook) confession from the Season 14 finale. What will it mean for her relationships with Reid and Will (Josh Stewart)? Check out the photos in the gallery above for the first two episodes of the new season to see a moment between her and one of the men in her life, the team's investigation, and Jane Lynch's return.

8 'Criminal Minds' Episodes to Watch and Fall in Love With JJ & Will Again (PHOTOS)See Also

8 'Criminal Minds' Episodes to Watch and Fall in Love With JJ & Will Again (PHOTOS)

Their future could be bleak, but we can't forget about these amazing moments from their past.

Criminal Minds, 15th and Final Season Premiere, Wednesday, January 8, 9/8c, CBS