Criminal Minds actor Matthew Gray Gubler has confirmed his return to the show in a new interview. Known for his breakout role as Dr. Spencer Reid in the long-running crime drama, Gubler appeared in all 15 seasons of the original Criminal Minds. Though he is one of the few core cast members not to reprise their role for the Paramount+ revival Criminal Minds: Evolution, the actor has maintained his openness to returning as Dr. Reid down the line.

https://screenrant.com/criminal-minds-season-18-matthew-gray-gubler-return/