Agatha Christie,
The Incredible Theft
“ Carlile's voice was repressive. 'Aha, you did not notice? But you are a young man. Does not a young man notice when a girl is pretty?' 'Really, M. Poirot, I can only repeat that I did not do so.' Carlile cast an agonized glance at his employer. Sir George Carrington gave a sudden chuckle. 'M. Poirot seems determined to make you out a gay dog, Carlile,' he remarked. 'Me, I always notice when a girl is pretty,' announced Poirot as he descended the stairs. ”
