Written by Jane Espenson, ‘Immortal Sins’ airs in the UK at 9pm on Thursday 25th August on BBC One and in the US at 10pm on Friday 19th August on Starz.
The episode sees Gwen fighting to protect her family and taking a terrifying journey covering both miles and decades, as the long history of the Miracle is revealed.
> Order the Blu-ray on Amazon.
Watch a behind-the-scenes look at Miracle Day…