For some crimes, there are no words ... at least according to the Season 8 promo for "Criminal Minds."

In the promo above for the new season of the CBS drama, "Big Love" actress Jeanne Tripplehorn makes her debut on the series as Alex Baker, a linguistics expert and Georgetown professor dealing with an escaped Texas prisoner who specializes in sewing his victims' mouths shut.

"He kills at 9 ... I'm not good at waiting," Alex says. "Neither am I." Hotch (Thomas Gibson) replies ominously.

"Criminal Minds," which debuted in 2005, centers on a team working for the FBI's Behavioral Analysis Unit (BAU), based in Quantico, Virginia. The series also stars Jayn Atkinson, Joe Montegna and more.

"Criminal Minds" Season 8 premieres Wed., Sept. 26 at 9 p.m. ET on CBS.

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  • Criminal Minds Season 8

    Newest BAU member Alex Blake (Jeanne Tripplehorn) discusses evidence with the team as they investigate the murder of a victim with the trademark handiwork of the UnSub "The Silencer," who leaves behind victims with his unique trademark of sewing their mouths shut.

  • Criminal Minds Season 8

    Rossi (Joe Mantegna) and JJ (A.J. Cook) discuss evidence as the BAU investigates the murder of a victim with the trademark handiwork of the UnSub "The Silencer," who leaves behind victims with his unique trademark of sewing their mouths shut.

  • Criminal Minds Season 8

    Garcia (Kirsten Vangsness) makes a point as newest BAU member Alex Blake (Jeanne Tripplehorn) looks on when the BAU investigates the murder of a victim with the trademark handiwork of the UnSub "The Silencer," who leaves behind victims with his unique trademark of sewing their mouths shut.

  • Criminal Minds Season 8

    (seated, left to right) JJ (A.J. Cook), Reid (Matthew Gray Gubler), newest BAU member Alex Blake (Jeanne Tripplehorn) and Morgan (Shemar Moore, standing) go over evidence as the BAU investigates the murder of a victim with the trademark handiwork of the UnSub "The Silencer," who leaves behind victims with his unique trademark of sewing their mouths shut.

  • Criminal Minds Season 8

    Morgan (Shemar Moore) flashes a smile to his BAU team members during their latest investigation.

  • Criminal Minds Season 8

    seated, left to right) JJ (A.J. Cook), Reid (Matthew Gray Gubler), newest BAU member Alex Blake (Jeanne Tripplehorn) and Morgan (Shemar Moore, standing) go over evidence as the BAU investigates the murder of a victim with the trademark handiwork of the UnSub "The Silencer," who leaves behind victims with his unique trademark of sewing their mouths shut.

  • Criminal Minds Season 8

    Hotch (Thomas Gibson) and newest BAU member Alex Blake (Jeanne Tripplehorn) talk as they investigate the murder of a victim with the trademark handiwork of the UnSub "The Silencer," who leaves behind victims with his unique trademark of sewing their mouths shut.

  • Criminal Minds Season 8

    JJ (A.J. Cook), Hotch (Thomas Gibson) and newest BAU member Alex Blake (Jeanne Tripplehorn) look at evidence as the BAU investigates the murder of a victim with the trademark handiwork of the UnSub "The Silencer," who leaves behind victims with his unique trademark of sewing their mouths shut.

  • Criminal Minds Season 8

    JJ (A.J. Cook) ponders the evidence as the BAU investigates the murder of a victim with the trademark handiwork of the UnSub "The Silencer," who leaves behind victims with his unique trademark of sewing their mouths shut.

  • Criminal Minds Season 8

    Hotch (Thomas Gibson), newest BAU member Alex Blake (Jeanne Tripplehorn) and JJ (A.J. Cook) look at evidence as the BAU investigates the murder of a victim with the trademark handiwork of the UnSub "The Silencer," who leaves behind victims with his unique trademark of sewing their mouths shut.

  • Criminal Minds Season 8

    Newest BAU member Alex Blake (Jeanne Tripplehorn) helps investigate the murder of a victim with the trademark handiwork of the UnSub "The Silencer," who leaves behind victims with his unique trademark of sewing their mouths shut.

  • Criminal Minds Season 8

    Hotch (Thomas Gibson) and newest BAU member Alex Blake (Jeanne Tripplehorn) talk as they investigate the murder of a victim with the trademark handiwork of the UnSub "The Silencer," who leaves behind victims with his unique trademark of sewing their mouths shut

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