Poirot wished her good morning with Gallic politeness, and went on: "We have been looking through that chest, Dorcas. 
Poirot did not find anything of interest in an old chest, but was polite anyway.
mnli hypothesis: Poirot did not find anything of interest in an old chest, but was polite anyway. premise: Poirot wished her good morning with Gallic politeness, and went on: "We have been looking through that chest, Dorcas. 