Double Exposure, by Michael Lister, has been marked down to $1.99. I suspect it is part of the monthly $1.99 unadvertised specials Amazon has been running, so the price may hold for another couple of days (then again, it may not). In any case, it's a stand-alone thriller with all five-star reviews (except from Publisher's Weekly and they seem to take the critical aspect of being a critic as a requirement for their reviews).
Book Description
Following his dad’s death, Remington James returns to the small North Florida town where he grew up to assume his father’s life—taking care of his dying mother and running the local gun and pawn shop.One fateful fall evening, as the sun sinks and the darkness expands, Remington ventures deep into the river swamp to try out some new equipment and check his camera traps. Encountering the kind of wildlife that made him want to be a photographer in the first place, Remington gets some of the best shots of his life, but he’s about to happen upon the most dangerous animal of all—a feral, patient, sociopath who wants Remington dead.