When Cal wakes with a life-threatening fever, Grace worries it's a side-effect of his experimental cancer treatment, but Michaela and Ben suspect Cal's condition may be related to a mysterious passenger from Flight 828. As Cal's situation worsens, Ben and Michaela attempt to track down the now-missing passenger.
Quest roles:
Tim Moriarty(NSA Deputy Tim Powell), Thursday Farrar(Dr. Williams), Daryl Edwards(Robert Vance), Jacqueline Antaramian(Anna Ross), Francesca Faridany(Fiona Clarke), Nikolai Tsankov(Marko Valeriev), Edward Astor Chin(James Lyn)