Nick discovers that a group of dodos are carrying a deadly ancient parasite that could have devastating consequences for the human population. Meanwhile, Helen is back in the 21st century, and being interviewed by the Home Office, although she isn't being as cooperative as they hoped.
Elenco: Ciarán McMenamin , Andrew-Lee Potts , Hannah Spearritt , Ben Mansfield , Alexander Siddig , Janice Byrne , Ruth Kearney , Ruth Bradley , Ben Miller .