“How can you be so sure of the time?”
“Because I saw him descending the stairwell with a large, oddly-shaped bag slung over his shoulder and thought, ‘If he’s a killer and the police later ask me what time it was, what would I say?’ I guessed at 10.15, but when I looked at my wristwatch it had just turned 10.13.”
“Do you have a habit of imagining yourself as a witness in a crime story?”
“Yes, of course. Who doesn’t?”
The police officers looked at each other knowingly, but neither of them could think of an answer.