Doctor Who: Primeval

Episode 26
Big Finish Productions
Read By Peter Davison, Sarah Sutton

Nyssa will die at dawn, and the Doctor doesn't even know why.

To save her life, he must make a desperate journey to the only place in the universe where a cure might exist.

When even that fails, the Doctor has a choice -- let Nyssa die, or make a deal with the devil.

After all, the road to hell is paved with good intentions...