In Cold Blood is a 1966 book by American author Truman Capote; it details the brutal 1959 murders of Herbert Clutter, a successful farmer from Holcomb, Kansas, his wife, and two of their four children. When Capote learned of the quadruple murder, before the killers were captured, he decided to travel to Kansas and write about the crime. He was accompanied by his childhood friend and fellow author Nelle Harper Lee, and together they interviewed local residents and investigators assigned to the case and took thousands of pages of notes. The killers, Richard "Dick" Hickock and Perry Smith, were arrested some six weeks after the murders, and Capote ultimately spent six years working on the book. The book became the greatest crime seller at the time and is almost universally acknowledged as one of the best books of its type ever written.
Some critics consider Capote's work the original non-fiction novel, although other writers had already explored the genre, such as Rodolfo Walsh in Operación Masacre. The book examines the complex psychological relationship between two parolees who together commit a mass murder. Capote's book also explores the lives of the victims and the effect of the crime on the community where they lived. In Cold Blood is regarded by critics as a pioneering work of the true crime genre.

In Cold Blood

Alvin A. Dewey, chief investigator of the 1959 killings chronicled in the book and movie ''In Cold Blood,'' died Friday at a hospital here after suffering a stroke at his home. He was 75 years old.

Mr. Dewey, who retired in 1975 after nearly 40 years in law enforcement, became internationally known for his investigation of the Nov. 15, 1959, murder of Herbert Clutter and three members of his family in their rural home in Holcomb. Two convicted killers, Perry Smith and Richard Hickock, were executed five years later.
Truman Capote wrote ''In Cold Blood,'' a graphically detailed account of the case that was turned into a movie in which John Forsythe portrayed Mr. Dewey, a three-term Finney County sheriff who later worked for the Kansas Bureau of Investigation for 20 years. Biggest, But Not Toughest Case
At his retirement, Mr. Dewey told reporters that while the Clutter case was possibly his biggest in terms of publicity, others among the 200 homicides he investigated were more difficult.