Agatha Christie,
Secret Adversary
(1922)
“ Tommy was pleased with the concluding words of this speech. His only regret was that Tuppence was not present to appreciate its full flavour. “That is true,” said the working man suddenly. “Comrades, we have been betrayed!” An ugly murmur arose. Tommy smiled at them encouragingly. “That’s better. How can you hope to make a success of any job if you don’t use your brains?” “You will tell us who has betrayed us,” said the German. “But that shall not save you—oh, no! You shall tell us all that you know. Boris, here, knows pretty ways of making people speak!” ”
