The seventh in a series of audiobooks produced for the 50th anniversary of Doctor Who, as performed by Sophie Aldred (Ace) with Ian Brooker.
In the far future, the inhabitants of Tarsus Six face a desperate struggle to evacuate their world before their sun collapses into a cataclysmic spatial anomaly. When the Doctor navigates the TARDIS to a space station orbiting Tarsus Six, Ace assumes that he intends offer their assistance. But when the TARDIS is immobilised, Ace realises that their own lives are as much in danger as those of the fleeing inhabitants. The race is on to escape the destruction of Tarsus Six and the devastating shockwave that will follow, reaching out and destroying everything in its wake.