VIDEO: Sneak Peek - Part I of CBS's CRIMINAL MINDS Season Finale

On tonight's episode of CBS's CRIMINAL MINDS titled 'Angels,' when the BAU is called to Texas to consult on the murders of prostitutes, evidence points to killings with religious overtones. But as they delve further into the investigation, the team could put their lives at risk.

Part one of the two-part ninth season finale airs tonight, Wednesday, May 7 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Esai Morales returns as BAU Section Chief Mateo Cruz. Guest stars include Michael Trucco as Owen McGregor and Brett Cullen as Preacher Mills. Get a sneak peek below!

CRIMINAL MINDS revolves around an elite team of FBI profilers who analyze the country's most twisted criminal minds, anticipating their next moves before they strike again. The Behavioral Analysis Unit's most experienced agent is David Rossi, a founding member of the BAU, who is essential in helping the team solve new cases.  The BAU team is led by Special Agent Aaron Hotchner, a strong profiler who is able to gain people's trust and unlock their secrets. 

Other members include Special Agent Derek Morgan, an expert on obsessional crimes; Special Agent Dr. Spencer Reid, a classically misunderstood genius whose social IQ is as low as his intellectual IQ is high; Jennifer "JJ" Jareau, the team's former unit liaison-turned-profiler who recently married her longtime love; Penelope Garcia, the team's indispensible computer wizard who helps research the cases with her unique charm; and the team's newest member, Alex Blake, who rejoins the FBI after a stint as a university teacher and brings her linguistics expertise to the BAU. After finally conquering their serial stalker, "The Replicator," who threatened the team's existence, the BAU emerged stronger and more dedicated to use their expertise to pinpoint predators' motivations and identify their emotional triggers in the attempt to stop them.