In The Mystery of the Spanish Chest, Poirot and Japp commiserate on their lack of secretarial assistance. Japp is in his office, unsuccessfully trying to type a laborious letter, when Poirot interrupts him to ask for information and a favor.
Poirot’s disgruntled comment about Miss Lemon’s temporary disappearance to the classy seaside town of Frinton has an interesting bit of trivia connected with it. Just a year or so after Miss Lemon would take her holiday, Frinton became home to a certain Summer Theatre Season, a long-running entertainment that would end up engaging a variety of famous actors right at the beginning of their careers. One of these was none other than David Suchet.