'Criminal Minds' season 11 spoilers: Old faces return to help the team capture UnSubs in episode 15

Criminal Minds Criminal Minds/Facebook

The BAU team will travel to Los Angeles to solve another crime in the next episode of "Criminal Minds" season 11.

After freeing three young women from their kidnapper in the previous episode, the team will go all the way to the City of Angels after security footage showing an UnSub get into the victims' homes has emerged.

The episode will guest star "CSI: NY" alum Carmine Giovinazzo. But instead of helping the team investigate the crime, Giovinazzo will portray the role of a former janitor named Andrew Meeks.

The official synopsis for the episode reads:

"The BAU launches an intense manhunt in Los Angeles after the team discovers security footage that shows an unsub being invited into the homes of potential victims."

It was also reported that actress Marisol Nichols will reprise her role as Agent Natalie Colfax in "Criminal Minds" season 11 episode 15.

Agent Colfax first helped the team when a bus in Los Angeles was attacked with sarin gas in episode 2. Since the team will once again investigate a crime in LA, it is not surprising that Agent Colfax will once again lend a hand to catch a new UnSub.

But Agent Colfax will not be the only one who will return this season. According to TVLine, actress Paget Brewster will also reprise her role as former BAU member Emily Prentiss.

Nichols can also be seen in "Teen Wolf" season 5.

According to the report, Prentiss will return to the U.S. as an Interpol agent to track down an elusive serial killer. She believes that the criminal's next crime will be conducted in the country.

After leaving the series at the end of season 7, Brewster is now appearing on Fox's latest comedy "Grandfathered" opposite John Stamos.

"Criminal Minds" season 11 episode 15 airs Wednesday, Feb. 24, on CBS.

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