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: As is my custom on night trains, I took trional.
[Poirot makes a noise and looks at the doctor
] Dr. Constantine
: Diethylsulphone dimethyl methane. One dilutes the white crystals with water. It is a strong hypnotic. Countess Andrenyi
: Ha, ha! He makes it sound like a poison! Dr. Constantine
: As with most sleeping drugs, if taken in sufficient quantities it IS a poison. Count Andrenyi
: [jumping up
] You are not-! Hercule Poirot
: Ah, you are not *accused*... you are *ex*-cused! Thank you both for your help and cooperation.