The entire main cast will return for the tenth season except Jeanne Tripplehorn (Alex Blake), who left the show in the ninth season finale. On July 1, 2014, it was announced that Jennifer Love Hewitt will join the show as a series regular and will play Kate Callahan, a former undercover FBI agent whose exceptional work lands her a job with the Behavioral Analysis Unit.
Synopsis source : wiki
Criminal Minds Season 10. I never imagined...
