One Step Too Far by Lisa Gardner

 I stayed up way too late last night finishing this page-turner. Frankie Elkin is a woman with no special training but good luck at finding missing people because she notices things that others miss. So when she hears about a groom who went missing in the Wyoming woods during a bachelor party weekend with his groomsmen, she feels compelled to help. But Frankie has neither the experience nor the gear for a grueling trek into nature--and the rest of the search team doesn't really want her help. But she goes along anyway, which almost costs her her life.

Tim (the groom) was a golden boy, though Frankie realizes that his groomsmen didn't have a universally positive opinion of him. His father and his dying mother are determined to at least find his body, and the father assembles a team that includes most of the groomsmen along with a tracker, a woman with a cadaver dog, and a guy who is supposedly looking for Sasquatch. Morale is low anyway when strange things start to happen to the group. Their food disappears. One member becomes severely injured from a blow to the head. And everyone begins to feel like someone is actively watching the group--and trying to keep them from finding Tim.

I think the character of Frankie must have appeared in an earlier work by Gardner because she keeps thinking back on events from her life that sound like the plot from at least one other book. But that didn't keep me from enjoying this engrossing tale.