Bait (Circles #5)
Elizabeth Noble

Linden Bourne is a no-nonsense FBI agent. His hunt for a killer takes him to Wyoming, where he has questions for Tyler. Linden quickly realizes Tyler isn’t a suspect, but the next likely victim.
When he and Tyler then become trapped by a blizzard in an empty inn near Devils Tower they discover they’re not alone. The killer has targeted Tyler and won’t let a little detail like an unexpected visit by the FBI stop what they’ve planned to do. Linden is completely out of his element, but he’s sworn to protect and that’s exactly what he plans to do: protect Tyler at all costs.