By Michelle McNamara. Introduced by Gillian Flynn and with an afterword by Patton Oswalt, I'll Be Gone was made into a docuseries for HBO directed by the great Liz Garbus. Neither book nor case likely needs any introduction; McNamara's work, published posthumously, became an instant genre classic.
This PB shows some wear -- cornerwear, a couple of spots/smudges to the page edges, a couple of pages with small notes or former dog-ears -- but is good enough as a reading copy.