“One sometimes manages to put in some work as well.»
Something in his tone made Tuppence glance up sharply. He shook his head with a smile.
«No, I shan't say any more. Great mistake to say too much. Remember that. Never tell all you know—not even to the person you know best.
He strode away. Tuppence stared after him. She was beginning to understand Sir James's methods. Once before he had thrown her a hint in the same careless fashion. Was this a hint?”