Engines of War, an epic new Doctor Who novel about the Great Time War featuring the War Doctor (as played by John Hurt), is published in paperback by BBC Books on Thursday 18 June, priced £7.99.

> Read our 5-star review of the book.

To celebrate the release, we’ve got copies of the book to give away to four of our Twitter followers!

For a chance to win, just follow @CultBoxTV on Twitter and tweet the following text:

Follow @CultBoxTV and RT for a chance to win 4 x Doctor Who novel about the Time War http://ow.ly/OlpmD #HurtCB

The Great Time War has raged for centuries, ravaging the universe. Scores of human colony planets are now overrun by Dalek occupation forces. A weary, angry Doctor leads a flotilla of Battle TARDISes against the Dalek stronghold but in the midst of the carnage, the Doctor’s TARDIS crashes to a planet below: Moldox.

As the Doctor is trapped in an apocalyptic landscape, Dalek patrols roam amongst the wreckage, rounding up the remaining civilians. But why haven’t the Daleks simply killed the humans? Searching for answers the Doctor meets ‘Cinder’, a young Dalek hunter.

Their struggles to discover the Dalek plan take them from the ruins of Moldox to the halls of Gallifrey, and set in motion a chain of events that will change everything. And everyone.

> Buy Season 8 on DVD on Amazon.

> Buy Season 8 on Blu-ray on Amazon.

Season 9 has been filming in Cardiff since January and will begin on BBC One in September.

> Here’s everything we know about Season 9 so far.

This competition has now closed. The winners are Katie Witherington from Poole, Rachel Blackburn from Bottesford, Susan Mary Fuentes from Ware and Richard Tyler from Guildford.

Terms & Conditions: Employees and contributors of CultBox.co.uk and their families are not eligible to enter. The judge’s decision is final and no correspondence will be entered into. The prize may not be transferred to any other person. No cash alternative or alternative prize is available on entrant’s request, but in the event of the advertised competition prize being unavailable we reserve the right to offer an alternative prize of equal or greater value. Entry in the competition implies acceptance of these rules.