The Coldest War was a Decide Your Destiny book released in 2010.
Publisher's summary Edit
Join the Doctor on his travels through time and space and influence the story with your decisions. Choose a direction and let the adventures begin...
You're in the TARDIS when it loses power and crash-lands in a deserted snowy landscape. Something is sucking the energy from everything that passes! Is it the Sycorax? Or something else entirely? Help the Doctor and Amy unravel the mystery, before it's too late...
These interactive stories continue online. With links to exclusive animated scenes and an exciting online game, there's a new adventure waiting for you with every read!
to be added
- In one version of the story, a shapeshifter changes into two other aliens the Doctor has encountered: a Judoon and a Draconian.
- This novel features the return of the Sycorax, who first appeared in the television story The Christmas Invasion.