CHESHIRE
Dr Power lives in Alderley Edge, close to the Edge itself - a wooded, sandstone escarpment. The Edge is a magical landscape associated with a wealth of folklore, history and prehistory.
A setting in the novel is a fictional farm at nearby Lindow Moss (below), an equally ancient site with a black lake - the Celtic for Black Lake is llyn ddu, the derivation of Lindow.
The Mines - The Edge is a beautiful world, set high above Cheshire, but the Edge is also riddled with tunnels from old mine workings and caves. Visitors to the Edge are often unaware of the danger lurking beneath the surface. Copper (and later cobalt mines) date back to the Bronze Age and were once an industrial feature of the landscape.
For lively folk there are occasional chances to book onto tours down the Alderley mines, run by the Derbyshire Caving Club.
A singing post - at times of possible collapse the wooden post would sing or keen.
A diversion to Glasgow.
Dr Power and Lynch take refuge in the Willow Team Rooms in Glasgow. Power has a steaming cup of Darjeeling.
Lynch researches the identity of Mr Heaney at the University of Manchester.
The University Buildings from 1903 were designed by Waterhouse, who is the putative architect of Dr Power's house in Alderley Edge. Some of the novel was also researched and written at the University Library.