Agatha Christie,
The Man in the Brown Suit
“ Nadina knew too much. I’m an easy-going man, kind-hearted and good tempered so long as I’m not thwarted. Nadina both thwarted me and threatened me—just as I was at the apex of a successful career. Once she was dead and the diamonds were in my possession, I was safe. I’ve come to the conclusion now that I bungled the job. That idiot Pagett, with his wife and family! My fault—it tickled my sense of humour to employ the fellow, with his Cinquecento poisoner’s face and his mid-Victorian soul. A maxim for you, my dear Anne. Don’t let your sense of humour carry you away. ”
