The village of Hollow Bay in '' The Secret Of Crickley Hall '' is based on Lynmouth in Exmoor National Park , Devon ; Devil 's Cleave is the East Lyn Valley and Watersmeet . The book brings together two stories , child evacuees during the Second World War and the 1952 flood disaster that devastated Lynmouth
1952 flood disaster
Lynmouth Flood
The Secret of Crickley Hall