David Henchman,a young undergraduate,several other young cubs and their tutor are participating in a reading party. In the morning they pore over texts and in the afternoon they climb hills and discover Dartmoor 's treasures. One morning David visits Knack Tor with its magnificent views. When he finally, after a stiff climb,arrives at the top he is not alone. A corpse awaits him there. He then calls for help and manages to attract the attention of a casual passerby. But this hiker seems to have an altogether different agenda. What follows is a wilde chase through heather ,moors,meadows and country lanes. When David finally finds himself in a more safe environment, Inspector Appleby enters the story... I've read novels by Michael Innes before and it always amounts to the same thing,sometimes the storyline is definitely worthwhile and sometimes it is all over the place. More than one third of the book consists of young David's adventures while being chased by the assailants. It feels as if it never going to end and when it finally does, we are confronted by spies and not very intelligent or successful ones. There is definitely a boy scout feeling about. Fine if you like it but it didn't really work for me.