Series numeration taken from: https://robertdmckee.com/index.php/gypsy-rock/.
Summary:
"In Reckoning at Lost Hope, United States Deputy Marshals Hugo Dorling and Billy Young race across 1890s Wyoming in search of the killer, Elijah Thorn. They must stop Thorn before he locates Ivan Kradec, an itinerant violin player, and eleven-year-old Abraham. The boy's father has dispatched the vicious Thorn with orders to return the boy to their cult in Nebraska and to kill Kradec and anyone who tries to stop him. The pursuit follows the old Oregon Trail, and the closer Billy and Hugo get to Thorn the more they realize that nothing they have encountered along the way is as it first appeared, including who is the hunter and who is the prey"-- Provided by publisher.
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