Nancy Barr Mavity. The Other Bullet (1930) 322 pp.
My—aunt—Maria! Hard-boiled, yet sentimental, Herald reporter
Peter Piper and his wife Barbara go to the village of Hangtown in the Sierra
foothills for a much-deserved vacation. On their first day there, a body
turns up with two bullets in it. Aline Everett, the aloof wife of a local
irrigation engineer, admits shooting the victim—but she swears she only
shot him once. Peter calls in famed consulting criminologist Emil Kurtner
to help out with the evidence. After Kurtner provides expert testimony
about ballistics and chemistry, Aline is acquitted and all of the other
newspapers consider the story put to bed. Peter is not satisfied, however,
and continues to investigate back in the city. With help from a petty crook
doing time in San Quentin and a lonely, keen-eyed old lady living in a
mansion in Piedmont, Peter finally puts all the pieces together and figures
out who fired the other bullet.