When 'Criminal Minds' Season 11 premieres on CBS on Sept. 30, fans of the police procedural television drama will see Behavioral Analysis Unit (BAU) team of FBI interviewing candidates to fill up the vacany created by Kate Callahan's exit, reports IB Times.

Meanwhile, a report in TV Line revealed the synopsis of 'Criminal Minds' premiere episode. The synopsis which reads, "The 11th season begins with the BAU interviewing different candidates to join their ranks in the wake of Kate's departure, including a forensic psychologist, Dr. Tara Lewis, who is eager to assist their efforts. Also, the BAU hunts for a serial killer who leaves behind distinctive evidence that points to someone intent on revenge. Aisha Tyler joins the cast in a recurring role as Dr. Tara Lewis."

Fans of the show will recall that 'Criminal Minds' Season 10 ended with Kate resigning from her post. Show executive producer Erica Messer has already confirmed that Jennifer Love Hewitt will not reprise her role as FBI undercover agent Kate Callahan, as she is expecting a child in real life and has gone on maternity leave.

Matthew Gray Gubler, who portrays Dr Spencer Reid in the series, revealed that there's another team memberwho is planning to take a break. Instead of catching the bad guys, he will now be directing the exit episode.

In an interview with Xap2it, Gubler said, "I am [directing]. There's a special episode," adding, "I almost don't want to give it away, but I might as well. It's the departure of one of the regular team members."

Talking about the upcoming season, Gubler, "Reid is back at it, catching scumbags and hanging with the team that he loves and helping solve crimes." He went on to elaborate, "We've got some new cast additions. Aisha Tyler is on the show. It's been great so far. We're definitely off to a good start. We're running fast."

Gubler is hopeful that the poor personable social skills of Reid will change in 'Criminal Minds' Season 11.

"That's the great thing about playing a character for so long is that there's always new territory. Trying to take him a little bit more - I've always wanted him to show growth," Gubler explained. "I want to see him slowly become less socially awkward and more confident," the actor concluded.