ABC and Marvel have debuted a promo for episode 20 of "Marvel's Agents of S.H.I.E.L.D." which you can check out in the player below. The episode is described as follows:
"Nothing Personal" – Just when there's no one left to trust, Agent Maria Hill (Cobie Smulders) – from "Marvel's The Avengers" and Marvel's "Captain America: The Winter Solider" – returns to team up with Coulson as S.H.I.E.L.D. is being destroyed around them. "Marvel's Agents of S.H.I.E.L.D." stars Clark Gregg as Agent Phil Coulson, Ming-Na Wen as Agent Melinda May, Brett Dalton as Agent Grant Ward, Chloe Bennet as Skye, Iain De Caestecker as Agent Leo Fitz and Elizabeth Henstridge as Agent Jemma Simmons. Guest starring are J. August Richards as Mike/Deathlok, Cobie Smulders as Agent Maria Hill, Adrian Pasdar as Colonel Glenn Talbot, B.J. Britt as Agent Antoine Triplett and Josh Breeding as parking attendant.
"Nothing Personal airs on Tuesday, April 29.