What's on TV Friday: 'Marvel's Agents of S.H.I.E.L.D.' on ABC

SERIES Whistleblower A husband and wife believe that a polygamist sect might be defrauding the government on a massive scale in this new episode of the documentary series. 8 p.m. CBS Blindspot Dominic (guest star Chaske Spencer) initiates Madeline's (guest star Mary Elizabeth Mastrantonio) apocalyptic...