At 1:00 a.m., my doorbell rang not with a polite chime, but with a frantic, desperate rhythm, like a bullet hitting glass. When I pulled open the heavy oak door and saw my daughter bleeding on my porch, I forgot every crime scene I had ever survived.

My daughter, Emma, stood on my porch. She was twenty-seven, barefoot, and shaking so violently her knees knocked together. Her lip was split, a jagged tear welling with dark blood. One eye had swollen into a terrifying, mottled purple. Rainwater ran through her tangled hair and down the collar of her torn gray sweatshirt.