Hazel Conroy was ready to retire. She left her life as a detective behind on Earth for a cushy job as a personal assistant on Titan... That is, until the disappearance of the Southern Cross dregs up skeletons from her past, shedding light on a bigger, more sinister conspiracy. As the refinery she works on descends into chaos, Hazel teams up with some unlikely friends and loads her service blaster one last time—taking aim at the very company that now employs her. Methane, ice, hell, and iron: The search for the Southern Cross begins on Titan.