It's the big mystery of the fall TV season: How is Agent Coulson actually alive?
Marvel's Agents of S.H.I.E.L.D. has yet to answer the question on how the team's fearless leader Agent Phil Coulson (Clark Gregg) is still kicking after being stabbed in the chest by Loki (Tom Hiddleston) in The Avengers. But Tuesday's episode did offer up another clue that could point us in the right direction. Let's first take a look at the clues we've already been given: