Mark Gatiss' classic novel comes to life in a brand new full-cast adaptation starring Sylvester McCoy and Sophie Aldred.

Available to buy on both CD and download today, Doctor Who: Nightshade is a brand new adaptation of the first Doctor Who story by long-term series contributor Mark Gatiss (writer of eight TV episodes, including The Unquiet Dead, The Idiot's Lantern, Cold War and The Crimson Horror, and the Big Finish audio plays Doctor Who: Phantasmagoria and Doctor Who: Invaders from Mars).

Adapted by Kyle C Szikora and starring Sylvester McCoy as the Seventh Doctor and Sophie Aldred as Ace, this dramatisation of the classic Virgin New Adventure finds the Doctor on the verge of retirement, while a malevolent alien force menaces the village of Crook Marsham. Listen to the trailer below:

Professor Nightshade - tea time terror for all the family, and the most loved show in Britain. But Professor Nightshade's days are long over, and Edmund Trevithick is now just an unemployed actor in a retirement home, fondly remembering his past.

It's the same through the entire village of Crook Marsham - people are falling prey to their memories. At first harmlessly, and then, the bodies begin to turn up.

The Doctor and Ace arrive on the scene - but, with the Doctor planning his retirement, it may be time for Professor Nightshade to solve one last case.

Starring Sylvester McCoy, Sophie Aldred, John Castle, Samuel Barnett, Katherine Jakeways, Edward Harrison, Jonny Magnanti, Tom Price and Carole Ann Ford, Doctor Who – The Novel Adaptations: Nightshade is available to buy and download today from the Big Finish website.

Don't forget, as with the majority of Big Finish releases, CD orders for this story give access to a complimentary digital download – so you don't need to wait to enjoy the story! With the title not available from other retailers until May 31st 2016, it's the perfect opportunity to ensure you're one of the first to hear this new retelling of a Doctor Who classic!

The range continues in December 2016 with the release of Doctor Who: Original Sin and one further Novel Adaptation. You can order these two releases alongside Doctor Who: Nightshade, Doctor Who: Theatre of War and Doctor Who: All-Consuming Fire as part of a special money-saving bundle.

Five other entries in the series are also available to order now; included our acclaimed adaptation of Russell T Davies' Doctor Who: Damaged Goods. You can purchase this story as part of a Limited Edition box-set, available while stocks last.