At 2:27 a.m., my dad called unexpectedly, “Honey… I’m at the police station. Your sister-in-law be:at me with a baseball bat. But she told the police I attacked her because I’m mentally ill. Your brother just stood by and let it happen!” When I walked in, the officer turned pale and stammered, “Ma’am, I… I…”

For thirteen years as a federal investigator, I had looked directly into the worst corners of human behavior. I had helped dismantle trafficking networks, questioned hardened offenders, and walked through…