Doom Creek by Alan Carter
Sergeant Nick Chester has dodged the Geordie gangsters he once feared, is out of hiding and looking forward to a quiet life. But gold fever is creating ill-feeling between prospectors, and a new threat lurks in the form of trigger-happy Americans preparing for doomsday by building a bolthole at the top of the South Island.
As tensions simmer in the Wakamarina Valley, Nick finds himself working on a cold-case murder and investigating a scandal-plagued religious sect. When local and international events reach fever pitch, Chester finds himself up against an evil that knows no borders.