Season One (S.H.I.E.L.D.)

The first season of NBC's S.H.I.E.L.D. first aired on October 19, 2010 with "Pilot" and concluded on April 19, 2011 with "Out of the Shadows". The season consisted of 20 episodes and averaged 10.20 million U.S. live viewers every episode.

Premise
After S.H.I.E.L.D. was taken down by Hydra, Nick Fury and Maria Hill formed a new S.H.I.E.L.D. in secret without revealing themselves to the public. Fury and Hill create a new mobile team of agents to neutralize smaller threats across the world.

Starring

 * Michael Rosenbaum as Agent Scott Harvey; the lead agent of the MFU, and a friend of Hill and Fury's.
 * Eva Longoria as Agent Danielle Jones; a long-time agent whose husband was revealed to be Hydra.
 * Zachary Levi as Agent Reese Bailey; a deadly agent who is good friends with Danielle.
 * Laura Vandervoort as Agent Nicole Jones; Danielle's younger sister and a new recruit in S.H.I.E.L.D.
 * Ana de Armas as Agent America Chaves/Miss America; a new agent who worked with Captain America.
 * Jack Huston as Agent Caleb Ward; a medical examiner in love with Nicole.

Recurring

 * Eric Bana as Frank Brown; a Mutant with telekinesis.
 * Max Greenfield as Hayden Jones; Danielle and Nicole's brother.
 * Carey Mulligan as Agent Mary White; a S.H.I.E.L.D. agent.
 * Josie Davis as Camila Simpson; Scott's ex-girlfriend and an agent of the CIA.
 * Josh Hartnett as Sam Morris; Reese's roommate.
 * Peter Facinelli as Agent Carl Jenkins; a S.H.I.E.L.D. agent.
 * Chris Messina as Assistant Director Logan Mason; the Hydra Assistant Director.
 * David Oyelowo as Agent Max Bailey; a S.H.I.E.L.D. agent.

Notable guests

 * Samuel L. Jackson as Director Nick Fury; the director of S.H.I.E.L.D. ("Pilot" and "Out of the Shadows")
 * Rosamund Pike as Deputy Director Maria Hill; the deputy director of S.H.I.E.L.D. ("Pilot")
 * Morena Baccarin as Agent Sharon Carter; a high-ranking S.H.I.E.L.D. agent. ("")