The cover for the previously reported exclusive Doctor Who audiobook; The Day of the Troll, has now been released and can be seen above thanks to Doctor Who Online. This audiobook in written by Simon Messingham exclusively for BBC Audiobooks. You can read the synopsis below.

When the Doctor arrives on Earth in the far future, he is horrified to find the planet beset by famine and starvation. England is a barren wasteland, and scientists are desperately seeding the ground to make the crops grow again. But now it seems that something even worse is happening. Karl Baring, the owner of research facility The Grange, has been snatched away in the middle of the night. His sister Katy was with him when he vanished, but is now in catatonic shock - so it is up to the Doctor, with the help of the scientists at The Grange, to investigate. What is lurking under the old bridge, and why is it preying on people? The Doctor must find out, before it strikes again...

This new audiobook follows on from the previous four; Pest Control, The Forever Trap, The Nemonite Invasion and The Rising Night and it is read by David Tennant who plays the 10th Doctor. The Day of the Troll will be released on CD on the eight of October at the RRP of £9.99.