Purists of the genre will probably say that this is not really a crime. It may be true. So there are murders, an investigation, but it's a book that contrasts with the novel's form and is called the non-fiction narrative.
The writer Truman Capote is staged in a place where a murder took place. We are in the mid-1960s. Truman Capote is a New York writer very jet set, very mundane. But one day, he hears of a terrible crime that occurred in Kansas in 1959. Two men killed four members of the same farm family. They were arrested. He is obviously in danger of death. Truman Capote goes there and settles there. He then makes a real inquiry and questions everyone.
A very subjective and incredibly well written text
He will also meet the murderers to understand how we go from marginal to criminal. And he tells everything. It's not a novel, because everything is true, but it's not a journalist's job either, because it is staged and it does not seek objectivity. On the contrary, it is quite subjective and above all incredibly well written.
He first published the book by episodes in the New Yorker. And then in volume, in 1966. Eight million copies sold. But he paid the price. Truman Capote was completely traumatized by this story. And it is true that there is something disturbing in this book. You do not come out unscathed.