The truth of the events leading up to Alice's return to Eckhausen in 2014 is finally revealed. Meanwhile, in 2016, Sam and Gemma are pulling together and join Julien in a desperate race against time, as they track Alice and Sophie's abductor from Germany all the way to the mountains of Switzerland.
Elenco: David Morrissey , Keeley Hawes , Abigail Hardingham , Tchéky Karyo , Anastasia Hille , Roger Allam , Laura Fraser , Lia Williams .