Andy and Mika are hunted while they search for the cause of theglobal crisis; Elena and Sam try to flee France to reunitewith Laura; Laura and her friend Owen grow closer, unawarethat a mysterious man tracks their every step.
Andy and Mika try to get home and find answers to the chaosdescending upon the world; Elena braves police and looters inCalais to get Sam his eye medication; Laura and Owen mustevade the threat that seems to appear at every turn.
Queen Catherine confides in a servant girl and begins to tellthe story of her life, including the circumstances surroundingher arrival at the French Royal Court at the age of 14.
Andy begins working to help solve the global crisis and revealshis personal connection to its cause; Elena and Sam illegallycross from France to England, but they are captured, detainedand separated; Laura and Owen face the man following them.
Faced with the choices of his past, Andy takes on themastermind behind the crisis to save his family and moderncivilization; Elena pieces the clues together and discoversthe location of the culprits.
After receiving bad news from home, Abbi attempts to replicatethe cure. Juan attends a party. Tilda tries to warn Sarkov ofthe risks of using nanobots.
Dara O Briain and Hugh Dennis look back at some of the newsfrom the week with guests Angela Barnes, AlasdairBeckett-King, Rhys James, Ria Lina and Josh Pugh.