In this last installment of the series, Eve receives new information from Lili about her missing son, and while Gabe heads to London to speak to the police, his wife and the girls are left with Gordon at Crickley Hall, where it becomes clear that Cribben's plan to find one final child means everyone's lives are in danger. The parallel storyline back in 1943 unfolds with Percy returning from the war to find Nancy gone. If you've been watching Dragons' Den for the last infinity (the latest series seems to have lasted forever), is on over on BBC2 also at 9pm. There's an inflatable Christmas tree and everything.