Kevin must die.
And a race of aliens hate him so much they're prepared to invade Earth to kill him.
Doctor How thinks his greedy, womanizing cousin Why can help - but can he be trusted?
As a killer robot blasts its way across the planet and a death ray is fired at London, Doctor How sends Kevin back in time on a desperate mission to save the Earth. But when he's paired up with one of the Doctor's previous assistants the sparks begin to fly - for all the wrong reasons....
Kevin's made a lot of dangerous enemies in the present, and things looks bleak back home - does he have a better future in the past?
This is book three of the Doctor How series.
This book series is not affiliated with or endorsed by the BBC. It is not a Doctor Who story.