This is the first biography of the legendary officer Cipriano Baca, scion of a prestigious Spanish lineage tracing their heritage to the first settlers in Nuevo Mexico. Baca was well educated and a successful businessman before beginning a 52-year career as a peace officer. Tenderhearted by nature, he could be cold as steel, even lethal, doing his duty. He was a man of honor and principle in an age of greed and selfishness.

Baca was first an undercover range detective, next a deputy sheriff and a deputy U.S. marshal. In 1901, the territorial governor appointed him the first sheriff of the newly formed Luna County, and in 1905, the territorial governor selected him as the first man to become the lieutenant of New Mexico's newly established territorial rangers. Written with the full cooperation of the Baca family and utilizing public and private records, this biography presents the truth about a complicated man. One revelation: Baca discovered who was the real killer of Pat Garrett and the motive behind the murder of the man who killed Billy the Kid.