Ariadne French has waited almost a year to hear from her boyfriend Aaron, who'd left with her trailer to find his fortune out West. Instead, a call came to say he'd just died in Marfa, Texas—and left her all his worldly goods. On the heels of the loss of her sister Zoe's young son, this is too much. Ari travels to Marfa to help settle the estate—and investigate Aaron's death. She finds herself in an exotic world of religious cults, a shady minister, a mystic Cherokee lawyer, a sly musician, cryptographic software, and Aaron's eccentric family, complete with crazy sister. After enduring everything from a chase through the desert by the Marfa Mystery Lights to some very real death threats from Aaron's erstwhile heirs, Ari finds herself recruiting Zoe to help her solve the ultimate mystery: why Aaron was killed, and who killed him.