Death by Misadventure

A police officer needs the quickness and guile of a bookmaker, the ingenuity of a psychiatrist and the physical reserves of a Marine, or so it seems to Detective Chief Superintendent Manton, who is called in to investigate a huge bullion robbery and its possible link with the death of a solicitor in a car crash. But even when a supposed double murderer is charged and tried there is still a taunting question mark over the case.
Whose was the brain that planned the audacious gold robbery and does Manton know enough about the criminal mind to find out?