Quadrail Books in Order

A stranger dies delivering a message to former security agent Frank Compton. Hired by the aliens who run the interstellar Quadrail, Compton investigates a threat to the transport network and uncovers a conspiracy reaching across civilizations.

Frank Compton and Bayta continue their pursuit of the mind-controlling Modhri aboard the Quadrail. A passenger's murder draws Compton under suspicion and leads him toward ancient alien sculptures that may give their enemy a dangerous new advantage.

Frank Compton refuses a woman's request to rescue her younger sister, then finds himself accused of the woman's murder. Seeking the child on New Tigris brings him back into conflict with the mind-controlling Modhri and its agents.

Frank Compton and Bayta board the Quadrail to investigate links between the Modhri group mind and the Filiaelians. Passenger murders complicate their mission, revealing a conspiracy whose implications may threaten even the enemy they have been pursuing.

Falsely accused of killing six prominent Filiaelians, Frank Compton arrives at Proteus Station facing imprisonment. A hidden force of engineered super-soldiers threatens the Quadrail, forcing him and Bayta to consider cooperation with the mind-controlling enemy they have fought.