I first read this "novelized" true-crime book when it was first published. I think that is what made me interested in this genre of reading. I recently re-read the book and found it just as compelling as the first time.
Simply put, nobody does it better. And writing it nearly - or perhaps definitely - destroyed Capote because he got so caught up in the psychology of the killers (Percy Smith, in particular).
Capote's writing is just beautiful. So evocative of place. It is a brilliant work!