Arthur Hastings and Felicity Lemon in “Unfinished Business”

Arthur Hastings

I'm worried about Poirot, Ms. Lemon. He's talking about retirement.

That's because he hasn't had an interesting case for five minutes. That, and the fact that someone said he was middle-aged.

Arthur Hastings

Well, he's always been middle-aged. Have you seen that photograph of him in his christening? He looked as though he was about to address a board meeting.