Writer Rochana Patel said: "It had to happen! The Thirteenth Doctor had multiple encounters with the main enemies on TV - the Master, Daleks, Cybermen, Sontarans, Weeping Angels - all of them, save one...Now, finally, it's time for her to cross paths with the Ice Warriors! Where? Sheffield! And that's a problem, because right now the Earth is utterly defenceless - UNIT has been decommissioned! So, who ya gonna call...?

"Well, actually, the police have more than one officer with relevant experience... Yes, Patricia Menzies is back in action! Long-term Big Finish listeners will know her as a recurring character from the Sixth Doctor range, but if you’ve never heard of her, don’t worry, neither has Yaz! I promise, you don’t need to know anything going in.

"This story is very much intended to be a mid-season jumping-in point. So if you've not been tempted to try this range yet, rest assured you can absolutely enjoy this Ice Warrior tale as a stand-alone story.

"And, if two returning elements still aren't enough to tempt you in, how about three? Because Yaz's sister, Sonya Khan, is also joining the adventure! And that means for Yaz, these events really will hit close to home..."