Vanishing Hour

In the latest from Griffin (“Tracers” series), lawyer Ava Burch and her search-and-rescue dog Huck show up late to look for a missing toddler in the Texan wilderness near Big Bend National Park. Assigned to a remote segment, Ava encounters a dusty old tent, but this strange discovery falls by the wayside when Ava and Huck later find the missing child. When Ava finally gets detective Grant Wycoff to come look at the scene with her, the tent is gone, but Grant believes it could be linked to a climber who disappeared in the area two years earlier. Ava takes it upon herself to investigate other recent disappearances in Big Bend—cold cases that Grant kept from her. Grant and Ava are attracted to each other, but their relationship stalls thanks to his secrecy and her insistence on digging into the past. They both fear that she’s getting too close when she and Huck are attacked on two search-and-rescue missions.