In episode 2, Kate Mosse, the author of the book on which the mini-series is based, makes a cameo as a tour guide.
Jessica Brown Findlay said she wouldn't do 'Labyrinth's steamy scenes again. "In 'Labyrinth' it is a very fleeting moment that we shot in one take, but I did find it very odd being naked in front of lots of people and I think it's awful that women get so criticised about their bodies," she said. "I think if you're going to do a nude scene, be honest and natural. Otherwise I'd be starving myself for ever, which I just couldn't do! The idea that actresses would work out at the gym for a thousand hours beforehand... I was drinking pints and eating burgers. But actually, it's not something I would do again."
Katie McGrath did interviews at the time saying she wasn't very comfortable with the nudity and tried to have it cut out but was told by the director that the scenes were staying in.
Tom Felton and Sebastian Stan appeared in The Apparition (2012).
Sir John Hurt and Tom Felton appeared in the Harry Potter film franchise.