After taking a brief hiatus, "Criminal Minds" season 11 will return with new episodes starting next week.

In episode 15's "A Badge and a Gun," the Behavioral Analysis Unit (BAU) will deal with a case of killings in which victims are being killed inside their homes. Hotch (Thomas Gibson), upon reviewing footages from security cameras, discovers that the last person seen to be around the victims is someone who is flashing his credentials, posing as an FBI Agent.

The promo trailer indicates that everyone easily trusts a man who carries a badge, which explains why the victims invited their killer inside their homes. "CSI: NY's" Carmine Giovinazzo is spotted as the one who's flashing his FBI badge to victims. JJ (A.J. Cook) in the trailer figures out what the unsub has been doing and asks, "What if he's one of us?" showing her badge as well.

According to Carter Matt, Giovinazzo plays Andrew Meeks, a former janitor. In that case, Meeks could be a disgruntled employee or someone who had gone through a major event in his life that may have triggered his killing spree.

Marisol Nichols returns to "Criminal Minds" in this episode as Los Angeles-based agent Natalie Colfax.

Meanwhile, after "A Badge and a Gun," one of the most anticipated episodes comes next. People will see an episode that would focus more on hunky Supervisory Special Agent Derek Morgan (Shemar Moore) as he might see his father, who will be played by Danny Glover.

Derek's father is presumed to be dead a long time ago, but it appears that there is an interesting twist to it. No one knows yet how Derek's father is alive after all those years, but showrunner Erica Messer previously hinted to TVLine, "The reason Derek needs to call on this protector in this moment and work through some things is really beautifully written." Titled "Derek," episode 16 was directed by Gibson.

Catch "Criminal Minds" season 11 every Wednesday at 9 p.m. EST on CBS.