As it stands, SHIELD has a long way to go to keep fans engaged. The good news though, is that there are some good story threads in there to be pulled on.
Last night's stellar Agents of SHIELD episode, "4,722 Hours," took viewers back to the final moments of the show's season two finale, where Jemma Simmons was swallowed up by the monolith. The episode followed Simmons from the moment...
