The "Canary" Murder Case

In the offices of the Homicide Bureau of the Detective Division of the New York Police Department, on the third floor of the Police Headquarters building in Center Street, there is a large steel filing cabinet; and within it, among thousands of others of its kind, there reposes a small green index-card on which is typed: “ODELL, MARGARET. 184 West 71st Street. Sept. 10. Murder: Strangled about 11 p.m. Apartment ransacked. Jewelry stolen. Body found by Amy Gibson, maid.”