The Poetry of a Killer is a true crime book written by Ryan Hardy about the case around Joe Carroll and his first killing spree at Winslow University.
Ryan was advised against writing it by his partner Tyson, but Tyson changed his opinion after Ryan said he was writing it in order to make himself feel beter.
It was never stated how popular the book was, but it is implied to have done much better than Joe's novel The Gothic Sea, given the fact it has yet to have been stated to be bad by readers.
Joe left Ryan a note inside a copy of Ryan's book he acquired while in prison, saying that he enjoyed it and wondered if Ryan ever considered a sequel.