Shattered

It starts as a kid's game to while away the long drive across country. It ends in a grotesque nightmare of death and destruction. Alex and Colin are travelling three thousand miles by car to a golden city and a golden girl. She's Colin's adored sister, Alex's ravishing new wife. But she could cost them their lives. Someone's out to get them. To destroy their dreams. To plunge them into a paranoid world where every sound could be the last thing they ever hear. Originally published under the pseudonym K. R. Dwyer