November 1940. As dawn begins to break, blackout regulations are rendered pointless by a car burning fiercely near the Regent's Canal in Camden Town, north London. In the burnt-out vehicle police find the charred remains of a body. The victim is Les Latham, a commercial traveller for the Baring and Sons confectionery company. He liked to be known as Lucky Les, but it seems his luck has finally run out.Detective Inspector John Jago discovers a mysterious photograph and some suspicious-looking petrol ration books among Latham's belongings. These lead him off on a murky trail of deceit, corruption and murder. It seems that the Blitz Detective will have to make his own luck to bring to light an unexpected killer.