“How We Get to Peace” — (9:00-10:00 p.m. ET) (TV-14, LV) (HDTV)
DETERMINATION — Clarke’s (Eliza Taylor) determination to protect Madi (guest star Lola Flannery “Home Again,” “Shadowhunters”) puts Bellamy (Bob Morley) in an impossible position, Paige Turco, Henry Ian Cusick, Marie Avgeropoulos, Lindsey Morgan, Richard Harmon, Chris Larkin and Tasya Teles also star. Antonio Negret directed the episode written by Lauren Muir (#508). Original airdate 6/26/2018.