When Sadie saw the photographs side by side, she asked who the woman in the blue cap was.

Callum told her about Aisha.

Sadie said she looked clever.

He agreed.

Then he said that his students might teach him as much as he had ever taught them.

PART 29

We planned a weekend at a lake within driving distance, choosing a small cabin with easy access and a flexible reservation.

It was the first trip Callum had taken in years that wasn’t connected to a conference or a hospital.