Insurance underwriter Ken Hinde is driving home from Kempton Racecourse when his car inexplicably goes out of control and crashes. The doctors are unable to save him, and he dies a few hours later in hospital. The verdict - accidental death. But Valerie Elphick, Ken's personal assistant and close friend, refuses to accept the verdict. She makes some enquiries of her own - and soon attracts the attention of the wrong sort of people, people who will stop at nothing to hide the truth about what really happened to two valuable racehorses, and why Ken had to die.