Two weeks before his college graduation, Kelley Clink's younger brother died by suicide. Though he'd been diagnosed with bipolar disorder as a teenager and had attempted suicide once before, the news came as a shock--and it sent Kelley into a spiral of guilt and grief. After Matt's death, a chasm opened between the brother Kelley had known and the brother she'd buried. She kept telling herself she couldn't understand why he'd done it--but the...