He will be helping Team SHIELD in the final battle against evil AI Aida. Apparently, Yo-Yo (Natalia Cordova-Buckley) and General Talbot (Adrian Pasdar) will also feature in the episode which airs in the States on 16 May. If E4 in the UK show the rest of the season without a break, we should get to see it on 18 June.
Last we saw Ghost Rider he sacrificed himself in a quantum explosion in episode 4.08 to rid the world of evil uncle Eli, but he was probably dragged into a dark dimension holding zone rather than killed, awaiting a shock return at a dramatic moment.
Oh, and next week’s UK episode is utterly drop dead brilliant. Miss it at your peril.