Alastair Bayardo

Coulson and Mack discover a shocking secret about Mace, which leaves all of S.H.I.E.L.D. in a dangerous position.

Nell's sister Sydney needs help when she gets mixed up in a Russian plot to steal classified intelligence from the Department of Defence.

Detective Lovato's past as an undercover officer tangles up with her present duty when one of the gang members she ingratiated herself in and developed feelings for turns up tortured and killed.