Zazie Beetz, Carrie Underwood, Luke Bryan, Lionel Richie, Julianne Nicholson

Actor Zazie Beetz ("They Will Kill You"); American Idol judges Carrie Underwood, Luke Bryan and Lionel Richie ("American Idol" Season 24); actress Julianne Nicholson ("Paradise"); Prime Focus, featuring Ike Ejiochi, follows two patients and their doctors to learn about the effects of ketamine as treatment for depression.