
“There is a very great difference”
“Here is a liquid as colorless as water, almost tasteless, quite imperceptible in coffee, milk, wine, or any other beverage. It is also quite imperceptible to any known method of autopsy.” “Do you mean it is a poison?” cried Alan, very much horrified. “Call it cleaning fluid if you like,” said the old man indifferently. “Lives need cleaning. Call it a spot-remover. ‘Out, damned spot!’ Eh? ‘Out, brief candle!’ ” “I want nothing of that sort,” said Alan. “Probably it is just as well,” said the old man. “Do you know the price of this? For one teaspoonful, which is sufficient, I ask five thousand dollars. Never less. Not a penny less.””