People who are really interested in the way literature works often love true crime novels.
True crime novels are still very much novels. The author takes facts and arranges them in a way that support the author’s narrative. The narrative often has to do with whether the accused is guilty or not. In case it’s impossible to create doubt about guilt, the narrative is about motive. The author creates a motive and arranges the facts to support it.
These texts tend to lack any aesthetic merit, and as a result, all of the technical aspects of fiction writing are open to view. True crime novels are like autopsies of the novelistic genre. [I had surgery today, so please don’t expect very elegant writing from me. Just expect lots of it as I’m recovering in bed.]
It gives me almost physiological pleasure to rummage in the innards of fiction writing as I read true crime novels.