[Warning: This story contains spoilers from Tuesday's Marvel's Agents of S.H.I.E.L.D. Read at your own risk!]
Agent Coulson is the key to unlocking Stage 3 — whatever that means.
On Marvel's Agents of S.H.I.E.L.D.'s midseason finale, the team was thwarted by Centipede, who have so far been one step ahead of them all season thanks to The Clairvoyant — whoever that is.
See, Centipede's own soldiers have been essentially breaking down after every mission, unable to sustain their power without new injections. But when they see video...