I love it. Currently reading Ultimate Evil. It tackles the theory that there was more than one Son of Sam.
there was a netflix docuseries on that theory that I binged. oddly enough, i dont like reading true crimes. i like watching the documentaries and listening to podcasts.
Tough to beat Helter Skelter and In Cold Blood. They're kind of cliche, but they popularized the genre.
I've read all the books mentioned in this thread. But I also really like the trashy stuff...like the books by Ann Rule.