“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, on “Marvel’s Agents of S.H.I.E.L.D.,” Tuesday, April 29th on ABC. Watch the preview below.