The Willowstown Murders

Umbra Echo is a private detective in Kerbyshire who straddles the world of the rich and the poor. People who wished to escape the filth of the city created a center outside yet tethered to Kerbyshire, called Willowstown. When two children are found dead in the idyllic town of Willowstown, their world is turned upside down. Things like that weren't supposed to be able to happen. Echo is called to investigate.