As previously announced, Jennifer Love Hewitt will join the cast of Criminal Minds this fall as a series regular.

The former Ghost Whisperer and Client List star will come on board as an eight-year FBI agent named Kate Callahan.

And TV Guide has your first look at this actress in the role!

"Kate is smart, charming, and wise for her years," executive producer Erica Messer teases. "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."

Look for Callahan to be old friends with members of the BAU team.

Criminal Minds Season 10 kicks off on October 1.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.