Odd Girl Out is the third book in the The Quadrail series
The story starts shortly after the events in The Third Lynx. Upon arriving home, Frank Compton is awaited in his apartment by an unknown girl, who asks his aid in saving her sister. Declining her request, he sends her away.
The following day, he learns the girl has been brutally murdered, and one of his weapons is found at the scene. Together with Bayta, Compton travels to New Tigris to locate the girl's sister. There he learns both girls are part of an experiment by the Chahwyn, Compton and Bayta's employers, to create friendlier, symbiotic version of the Modhran coral they have been fighting for the past year. However, the Modhri has become aware of the project, and aims to assimilate the 'Abomination' before it can escape.
