Now a milestone of unsolved true crime, the Hall-Mills case began in New Brunswick, New Jersey, in 1922 and lasted for over a decade. The killer has never been found, and the case continues to fascinate true-crime aficionados. A bon vivant Episcopal minister, a not-so-virginal soprano in his choir. The wealthy wife. Her oddball brother. Their furtive maid. The snooping congregants. The bumbling detectives. And in the denouement, a...