"In Cold Blood" is a 1966 book by Truman Capote, an American author.

In Cold Blood was first published as a four-part serial in The New Yorker, beginning with the September 25, 1965, issue. The piece was an immediate sensation, particularly in Kansas, where The New Yorker had distributed the usual number of copies, which sold out immediately. In Cold Blood was first published in book form by Random House in January 1966.[6] The book, however, was copyrighted in 1965, and this date appears on the title page of most printings of the book and even in some library indexes as the original publication date. The Library of Congress lists 1966 as the publication date and 1965 as the copyright date.

Source: Wikipedia