Robert Napper carried out seventy attacks across southeast London over five years and stayed free. This episode is a behavioral analysis of how the Green Chain Rapist constructed his operational pattern — the outdoor methodology that left no fixed location and no forensic trace, the three institutional failures that protected him, and the Rachel Nickell murder that ran alongside unchecked — and how a single fingerprint from one indoor scene in Plumstead ended it all. A clinical deep dive into predatory psychology and what a truly disciplined approach would have looked like. The behavioral patterns explored in this episode are fictionally examined in the novel Adam by J.R. Maren — available on Amazon Kindle. Control Studies.