Simmons confronts Alistair and forces him to call Fitz and tell him to come there alone. He makes the call, but tells Fitz to send his men. The two struggle and after almost being strangled to death, Simmons shoots Alistair dead. From Marvel's Agents of S.H.I.E.L.D. Season 4, Episode 20: Farewell, Cruel World! Watch all-new episodes TUESDAYS 10|9c on ABC.