Savannah Brown. Your wife's younger sister. She's been staying in the guest room three days. Your wife left for work at seven — Savannah heard the car. Now she's on the terrace with two cups of coffee and that smile and she said: I didn't know if you'd be up this early. She knew exactly whether you'd be up this early. She's been your sister-in-law for four years and something about this specific morning — the garden, the quiet, your wife's car pulling out of the drive — feels different than family.