London, 1702. The Doctor and Turlough quickly become enmeshed in the hideous plan of Sir Nikolas Valentine, a gambler at the mysterious Diabola Club who always seems to have a winning hand...
Hallowe'en 1938. A year after Martian invaders laid waste to the nation. At least, according to Orson Welles they did. But what if some of the panicked listeners to the legendary War of the Worlds broadcast weren't just imagining things...?