There will be lots of excitement and new faces this fall as "Criminal Minds" returns to CBS with Season 10.

Starting next season, Jennifer Love Hewitt will appear on the show as a series regular in character as Kate Callahan, a "seasoned undercover agent whose stellar work at the FBI has landed her a coveted position with the Behavioral Analysis Unit," reports Entertainment Weekly.

Executive producer recently Erica Messer dropped more spoilers about what to expect from the new addition.

"Kate is smart, charming, and wise for her years," Messer told TV Guide about Hewitt's character, an eight-year FBI agent. "Her background is criminal psychology, and her passion comes from wanting to make the world a safe place. She's had a lot of personal loss that makes her a patriot and a nurturing figure to those in her personal and work families."

Messer also hinted about the upcoming season, telling TVLine, "You see [Kate] doing something you don't see our team ever doing, which is schmoozing with a bad guy, working undercover to take a pedophile down. We've never seen our team pretend to like a criminal, so right off the bat she's different in that way."

Back in May, Season 9 ended with a shocking twist when one of the main characters, Alex Blake, made a sudden exit.

From the previews, it appeared that Spencer Reid's life would be in jeopardy after he was shot in the neck. However, he managed to recover from his gunshot wound. Blake was forced to quit her job on the FBI's elite Behavioral Analysis Unit (BAU) after being traumatized by the shooting.

According to the Examiner, Jeanne Tripplehorn's contract on the show was up, so producers decided to give her a calm and quiet farewell. In an interview with TV Guide, executive producer Erica Messer opened up about Blake's departure from the long-running crime series and dropped a few spoilers about what to expect in Season 10.