Kudos to whomever came up with this prompt! I’d never think to sort books out in this manner.
1. Among the Missing: An Anecdotal History of Missing Persons from 1800 to the Present by Jay Robert Nash
4. The Heart Knows Something Different: Teenage Voices from the Foster Care System by Youth Communication
9. The Complete Manual of Things That Might Kill You: A Guide to Self-Diagnosis for Hypochondriacs by Megan E. Bluhm Foldenauer