Visual effects supervisor Mark Kolpack and Ghost Rider actor Gabriel Luna have tweeted out an image of the two clowning around the Agents of S.H.I.E.L.D. offices, with the episode titles of season 4B listed on a clipboard in the background. Since the tweet has not yet been taken down, this is most likely an intended reveal.
The episode names are as follows: ‘Wake Up’, ‘Hot Potato Soup’, ‘BOOM’, and ‘The Man Behind the Shield’. While the titles are mostly vague, that last one does hint at something more specific.
— Mark Kolpack (@MarkKolpack) December 31, 2016
Agents of S.H.I.E.L.D. airs on Tuesday nights on ABC and will return on January 10th.