When the nature writer Richard Mahler discovers that wild jaguars are prowling a remote corner of his home state of New Mexico, he embarks on a determined quest to see in the flesh a big, beautiful cat that is the stuff of legend - yet verifiably real. Mahler's passion sets in motion a years-long adventure through trackless deserts, steamy jungles, and malarial swamps, as well as a confounding immersion in centuries-old debates over how we should...