Patrick Dempsey joins cast of 'Dexter' prequel alongside Christian Slater
Dempsey, who is known for his role as Dr. Derek Shepherd in the ABC Series "Grey’s Anatomy," will play Aaron Spencer in the prequel, the captain of Miami Metro homicide who has a decades-long relationship with Harry Morgan, Dexter’s dad, who will be portrayed by Christian Slater, according to Paramount+ Showtime.