Season four of the action-packed drama series Agents of S.H.I.E.L.D., developed by Joss Whedon and set in the same ‘Marvel Cinematic Universe’ as the recent movies, debuts tonight. The show follows a team of intelligence agents led by Phil Coulson (Clark Gregg) investigating super-human individuals. One of the highlights for the season is the highly anticipated appearance of recurring guest star Gabriel Luna as the supernatural Robbie Reyes / Ghost Rider. In this episode, Coulson and S.H.I.E.L.D. mechanic Mack (Henry Simmons) join forces to track down Enhanced people, aka Inhumans, while pilot and weapons expert May (Ming-Na Wen) trains specialist strike teams.