“Marvel’s Agents of S.H.I.E.L.D.” Season 4 is full of changes. Not only are many characters headed down different professional paths, but the tone of the show will even be a little different. Jeph Loeb, Head of Marvel TV, explained that ABC’s decision to move the show to 10 p.m. on Tuesdays allows the writers to take the storyline to a darker place.
