Erica learns her partner, Malik, is a Visitor and must fight for her life - literally - to stop Anna from finding out she's Fifth Column. Meanwhile, Anna learns that Malik is missing and orders Ryan to find her, while Lisa realizes her body is beginn... (more)ing to change, causing her to become more and more like her mother.

Christopher Rosamund, Jaimie Mortimer-Lamb, John Paul McGlynn, Michael Patric, Sean Tyson, Trinity Jarman