A drunken driver is responsible for the death of his brother-in-law and business partner and for the death of the driver of the second car involved in the accident. But when Hardy comes into the investigation, a number of factors emerge which point away from its being the driver's responsibility. Who is guilty of the deaths? Hardy's concern for the facts leads to an exciting conclusion. Guest stars Geoffrey Chater, Tom Chatto, John Nettleton, John Stratton, Del Henney, David Hargreaves and Jim McManus.