Note: Full spoilers for the Agents of SHIELD midseason premiere, “Aftershocks,” follow. There are a lot of secrets being kept on Marvel’s Agents of SHIELD, as the midseason premiere found more than one duo bonding over information they were keeping from the rest of the team. On a recent visit to the show’s set, the cast and executive producers spoke about these plotlines and where they could be going. Now that we know Bobbi and Mack are up to something truly suspicious, and trying to gain access to the material Nick Fury gave to Coulson, it’s hard not to jump to the big H word – Hydra. Asked if we should make that assumption, Adrianne Palicki replied, “I don't think you should assume anything, honestly.