Starring Colin Baker as the Sixth Doctor and Miranda Raison as Constance Clarke, this brand new story has been written by Ian Edginton and is directed by Louise Jameson.

2029 AD. In the desert of Arizona, billionaire philanthropist Dr Hugo Macht is trying to save the world from climate change. But his great project to "scrub the sky clean" with nanoatomic machines grinds to an unexpected halt when his diggers break into something unexpected: a Viking burial barrow containing eight corpses, a mysterious shield, an even more mysterious inscription... and a yet more mysterious traveller in time and space, known only as the Doctor.

And that's not even the strangest part of Dr Macht's day. Soon, it'll begin to snow. Soon, the Doctor and his girl Friday, Mrs Constance Clarke, will come face-to-face with an ancient horror in the blizzard. A Frost Giant, in need of a new body. In need of flesh...

Doctor Who: Shield of the Jötunn is available to pre-order now. Check out the trailer on the release page, or via the Sound Cloud Player below.

The Sixth Doctor's new adventures begin in September with Doctor Who: Criss-Cross, before Siobhan Redmond returns to settle the score in Doctor Who: Planet of the Rani.

You can also hear Colin and Miranda's first apperance as Doctor and Companion in the recently released Doctor Who: The Sixth Doctor - The Last Adventure, a special five disc set telling the story of Sixie's last stand against his twisted future incarnation the Valeyard (Michael Jayston).