Promo Season Finale: Agents of S.H.I.E.L.D. (2014)

Dark secrets are revealed as Coulson and his team put everything on the line to stop Garrett and the forces of Hydra, on the explosive season finale of "Marvel's Agents of S.H.I.E.L.D., Tuesday, May 13 (8:00-9:00 p.m., ET) on the ABC Television Network. "Beginning of the End" was written by Maurissa Tancharoen & Jed Whedon and directed by David Straiton.

Air date: May 13, 2014, on ABC