Dr. Drew Pinsky discusses his role playing a therapist in the action thriller "Final Kill," and about his career in medicine. "I'm treating a criminal essentially, or maniac, and I'm trying to understand why he's so messed up. Why is he such a disturbed patient?" Pinsky shared about acting in "Final Kill." "Final Kill" is in theaters, on demand and digital on March 6 and stars Billy Zane, Randy Couture, Ed Morrone and Danny Trejo.

Watch the episode to hear more about Pinsky's experiences on the frontlines treating addiction and what he thinks today's challenges are—from pornography, to drug and alcohol addiction, to fentanyl and meth.