Free at Amazon - Gone The Next by Ben Rehder
GONE THE NEXT is the first novel in the Roy Ballard mystery series.
Meet Roy Ballard, freelance videographer with a knack for catching insurance cheats. He's working a routine case, complete with hours of tedious surveillance, when he sees something that shakes him to the core. There, with the subject, is a little blond girl wearing a pink top and denim shorts—the same outfit worn by Tracy Turner, a six-year-old abducted the day before. When the police are skeptical of Ballard's report—and with his history, who can blame them?—it's the beginning of the most important case of his life.
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UK
https://www.amazon.co.uk/Gone-Next-B.../dp/B009GPICOQ