The Outer Reaches Books in Order

In a world shared by two human species, detective Troy Goodhart and forensic specialist Lexi Iona Four investigate bodies discovered in woodland. Missing organs reveal a deliberate purpose behind the killings and draw the unlikely partners into medical wrongdoing.

A crashed van reveals a cache of body parts from endangered animals. Detective Troy Goodhart and forensic specialist Lexi Iona Four investigate the illegal trade behind the slaughter, facing criminals prepared to extend their violence to human victims.

Four people in different parts of the country die from mercury poisoning with no obvious connection. Troy Goodhart and Lexi Iona Four must establish what linked the victims before the same hidden threat can claim more lives.

Three scientists die inside a sealed laboratory while examining material returned from Mars. Troy Goodhart and Lexi Iona Four investigate whether the deaths were accidental or deliberate, uncovering a threat that reaches far beyond the laboratory.