Devil's Engine

Cover of Hellraisers

Book #1: Hellraisers

Cover of Hellfighters

Book #2: Hellfighters

Cover of Hellwalkers

Book #3: Hellwalkers

Cover of Hellwalkers

Book #3: Hellwalkers

Escape from Furnace

Cover of Death Sentence

Book #3: Death Sentence

Cover of Lockdown

Book #5: Lockdown

Cover of Fugitives

Book #5: Fugitives

Cover of Solitary

Book #5: Solitary

Cover of Execution

Book #5: Execution