My sister called me at midnight and whispered, “Turn off every light. Go to the attic. Don’t tell your husband.” I thought she was losing her mind — until I looked through the floorboards….

My sister called me at midnight and whispered, “Turn off every light. Go to the attic. Don’t tell your husband.” I thought she was unraveling — until I peered through the floorboards….
My sister called me at 12:08 a.m.

I almost ignored it.
My husband, Caleb Morrison, was asleep beside me in our house just outside Arlington, Virginia. Rain tapped steadily …