Death In The Valley — Robert Scott

In 1875, twenty-year-old Jeffrey Talbot helps solve several murders that occur in Yosemite Valley. With the help of such historical characters as John Muir, Florence Hutchings and others, Talbot goes on a quest that leads in a twisting path of clues and dead-ends. Yosemite Valley becomes a dark and dangerous place for Talbot and his fellow amateur sleuths in a deadly game of cat and mouse. As their journey leads them from El Capitan to Vernal Falls, Half Dome and beyond, Talbot and his band discover the explosive reason behind the killings. And that knowledge places all of them in grave danger of their lives.