Love all the Nevada Barr mysteries. Main character is a park ranger as is the author. Another in the series starring Anna Pigeon. Anna is a ranger in parks all over the country and often has to deal with murder in her parks. She is a flawed 50ish woman with a cat and a three legged dog. In this book, Anna is recruited to go to yosemite National park to investigate the disappearance of 4 park workers. She's undercover, working as a waitress in the park hotel dining room. Anna solves the mystery but not before being tracked by the bad guy on the mountain. Anna has a sprained ankle, no supplies (the bad guy took her pack) and it's winter. Typical suspensful, fast-paced read. fun.