Agents of S.H.I.E.L.D. Sneak Peek: See the Marvel Cinematic Universe Tie-In You've Been Waiting for (VIDEO)

Agents of S.H.I.E.L.D. Sneak Peek: See the Marvel Cinematic Universe Tie-In You've Been Waiting for (VIDEO)

"One Door Closes" flashes back to the day S.H.I.E.L.D. fell in Captain America: The Winter Soldier

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