Edward Chin-Lyn

An unanticipated event puts Watson back in contact with Elana March, a crime boss she helped put away; Sherlock asks Detective Bell to help him solve a theft at a zoo while Watson is preoccupied.

Root goes undercover to protect the host of a radio show; Samaritan's agents try to assure a team member that their intentions are noble.

Cal battles a life-threatening fever; Ben and Michaela search for a missing passenger from Flight 828 and discover much more than they bargained for.

Flashbacks show how Grace, Olive, and Jared dealt with the loss of their loved ones after Flight 828 vanished. Ben attempts to block the voice in his head by going on an adventure with Cal.