Death on Heron's Mere

'Mr Gabb, your son did not commit suicide. He was murdered.'

Simon Gabb had everything – or so it seemed: a beautiful house, a big estate, a flourishing business and two sons, both endowed with evident capacity for carrying on the family firm. One was brilliant, inventive, the other dependable and efficient. And yet something was manifestly wrong. A secret invention, on which his business was engaged for the government, became known to those who had not right to know it. But how and where di...