Jack Colby, car detective, is plunged into a dangerous investigation when he agrees to track down a classic car that's been missing for over a decade.When car detective Jack Colby is asked by the 'Mad Major' to find one of the original five cars that took place in the original Peking to Paris rally of 1907, he accepts the challenge, but is soon plunged into a far more dangerous investigation. Was the recent death of car restorer Alfred King the accident it seems? It's not long before the car crime underworld becomes involved in the quest for the missing De Dion, and the stage is set for murder . . .