Postern of Fate
Agatha Christie
Mass Market Paperback
(Bantam, March 15, 1974)
"What did she die off?" "Somebody brought a few foxglove leaves in with some spinach from the garden, by accident and then they ate it. Mind you, that probably wouldn't kill you""No," said Mr. Robinson. "But if you then put a strong dose of digitalin alkaloid in the coffee and just made sure that Mary Jordan got it in her coffee, or in a cocktail earlier, then the foxglove leaves would be blamed and it would all be taken to be an accident. But Alexander Parker, or whatever the schoolboy's name was, was too sharp for that. He had other ideas, did he? Anything else, Beresford? When was this? First World War, Second World War, of before that?"Before. Rumors say she was a German Spy"