Actor Naoko Mori said: “It’s Torchwood in an escape room, a panic room. I'm really claustrophobic, so as soon as I started reading this script, it was not a comfortable read. But you can always depend on Tosh. She's one of those people who will always sacrifice herself for everyone else.”

Writer Tom Black added: “I first designed disaster scenarios for an immersive theatre show called Crisis? What Crisis? a few years ago. The audience had to take part in an increasingly chaotic set of challenges that they needed to fix themselves.

“I think in real life Tosh would do okay, as she's very smart. She’s capable of seeing the big picture in a way that not all of the Torchwood Three team can when under pressure, and that's what excited me about putting her into this kind of scenario.”

Greg Wise, Jolade Obasola, Ed White, Naoko Mori, Tatjana Nardole