Roofworld — Christopher Fowler

There's a hidden battleground in the sky -- so says this classic novel from the award-winning author of the Peculiar Crimes Unit mysteries featuring Bryant & May. You'll never look at a roof the same way again. . . .
 
Welcome to Roofworld. High above London's teeming streets exists a timeless universe with laws and codes known only to itself, suspended by a complex system of cables and wires. Two rival factions wrestle for control of this elevated realm -- and eventually the city below.
 
When a beautiful, feisty amateur photographer named Rose and a shy, cynical screenwriter named Robert witness a kidnapping on a London roof, they figure it's an isolated incident. But after strange rooftop murders are reported almost daily, they have to know more. In their clumsy efforts to understand, they're caught up in an intense power struggle between the forces of good and a power-mad tyrant manipulating society's most hopeless citizens. Rose and Robert have a part to play in a war that's nearly invisible from the ground -- and nothing less than world domination is at stake.
 
Look for Christopher Fowler's fantasy and horror classics, now available as ebooks:
CALABASH | DISTURBIA | PSYCHOVILLE | RED GLOVES | ROOFWORLD | SPANKY