The term therefore means not "in the heat of passion," but "in a calculated, deliberate manner." In Cold Blood is a classic docudrama with a fictional thriller's grip -- and a pair of terrific lead performances from Robert Blake and Scott Wilson. Controversial and compelling, In Cold Blood reconstructs the murder in 1959 of a Kansas farmer, his wife and both their children. Truman Capote's comprehensive study of the killings and subsequent investigation explores the circumstances surrounding this terrible crime and the effect it had on those involved.
This expression alludes to the notion that blood is the seat of emotion and is hot in passion and cold in calm. The term therefore means not "in the heat of passion," but "in a calculated, deliberate manner." [Late 1500s] In Cold Blood, half a century on (Pilkington, 2009, November 16) Fifty years ago, Holcomb, Kansas was devastated by the slaughter of a local family.