TV Guide has learned that Titus Welliver, who clashed with Peter Florrick (Chris Noth) and his wife Alicia (Julianna Margulies) as Assistant U.S. Attorney Glenn Childs on the legal drama, will play meth dealer Ronald Booth in the 18th episode of P.D.'s fifth season.
His character is described as charming and intelligent but also comes with a mean side. An unpredictable man, he can go from a cool charm to impassioned rage in an instant. Given what we know about him so far, his encounter with the Intelligence Unit probably won't be a friendly one.
Chicago P.D. returns with new episodes on Wednesday, Feb. 28 at 10/9c on NBC.