How do you protect a man wanted dead by so many? With preparation, skill, bravery, quick-thinking and a little luck. This is the incredible true story of Walter Thompson, Churchill's private bodyguard, who was plucked from policing the streets of London to risk his own life to save that of one of history's greatest men.

Taken from his own journals, this is the incredible true story of the man beside the man; the man who kept Churchill safe from his would-be assassins to enable him to become Prime Minister in 1940.