“Exactly.”

Taylor later handed me Lily’s school schedule in an envelope dated October 3.

For a moment I thought the date proved she had been home when she said she wasn’t.

Ruth refused that inference.

“An old envelope can be used later.

It doesn’t place her in a house on the ninth.”

I sat back, embarrassed by how quickly I had wanted the paper to solve the question.

“What can we use it for?”