Young Tom French was found dead, lying in a marsh on the Norfolk coast, with his head bashed in and his binoculars still around his neck. One of the best birders in England, Tom had put the village of Rushy on the birdwatching map. Everyone liked him. Or did they? George Palmer-Jones, an elderly birdwatcher who decided quietly to look into the brutal crime, discovered mixed feelings aplenty. Still, he remained baffled by a deed that could have been...