About Peter Parkin Books by Peter Parkin Letters from a Killer by (author) Peter Parkin The Ascendant by (author) Peter Parkin Mule by (author) Peter Parkin & Alison Darby MetroCafe by (author) Peter Parkin & Alison Darby Headhunter by (author) Peter Parkin & Alison Darby Majestic by (author) Peter Parkin & Alison Darby Serpentine by (author) Peter Parkin & Alison Darby