Full spoilers for Marvel's Agents of SHIELD continue below. Like the first arc of Season 4 was "Ghost Rider," so the second arc is "L.M.D.," with the threat of Aida and her incognito androids looming large. But with Robbie Reyes in the rearview mirror (at least for now), Agents of SHIELD can put all its focus into the storyline it's teased since the end of Season 3: the L.M.D.-apocalypse. Ghost Rider was a great hook for the first arc of Agents of SHIELD's fourth season and the series did a good job with the character.