Louis Braille was just five years old when he lost his sight. He was a clever boy, determined to live like everyone else, and what he wanted more than anything was to be able to read. Even at the school for the blind in Paris, there were no books for him. And so he invented his own alphabet a whole new system for writing that could be read by touch. A system so ingenious that it is still used by the blind community today.

"As a park ranger with the National Park Service's law enforcement team, Andrea Lankford led search and rescue missions in some of the most beautiful (and dangerous) landscapes across America, from Yosemite to the Grand Canyon. But though she had the support of the agency, Andrea grew frustrated with the service's bureaucratic idiosyncrasies, and left the force after twelve years. Two decades later, however, she stumbles across a mystery that pulls her right back where she left off: three young men have vanished from the Pacific Crest Trail, the 2,650-mile trek made famous by Cheryl Strayed's Wild, and no one has been able to find them. It's bugging the hell out of her. Andrea's concern soon leads her to a wild environment unlike any she's ever encountered: missing person Facebook groups. Andrea launches an investigation, joining forces with an eclectic team of amateurs who are determined to solve the cases by land and by screen: a mother of the missing, a retired pharmacy manager, and a mapmaker who monitors terrorist activity for the government. Together, they track the activities of kidnappers and murderers, investigate a cult, rescue a psychic in peril, cross paths with an unconventional scientist, and reunite an international fugitive with his family. Searching for the missing is a brutal psychological and physical test with the highest stakes, but eventually their hardships begin to bear strange fruits--ones that lead them to places and people they never saw coming." -- inside front jacket flap.