JAHA RETURNS TO POLIS — Jaha (Isaiah Washington) returns to Polis, and Murphy (Richard Harmon) has a surprise encounter. Meanwhile, Octavia (Marie Avgeropoulos) uncovers a clue. Bob Morley, Devon Bostick, Lindsey Morgan and Christopher Larkin also star. P.J. Pesce directed the episode written by Justin Juel Gillmer (#312).