Season 10, episode 16 of Chicago Med makes Dr. Charles (Oliver Platt) out to be a hero, but there’s a chance his handling of a delicate case will have extreme consequences. “Poster Child” packs in a number of storylines for virtually every character in the Chicago Med cast, with a few of them setting up potentially major plot points. Lenox (Sarah Ramos) and Frost’s (Darren Barnet) subplots explore their histories a bit more than Chicago Med season 10 has thus far, and Ripley’s (Luke Mitchell) suspension arc is officially over.