"If you know that, why has neither of them been taken?"
"To know is one thing; to be able to prove quite another. We cannot get these rascals from England merely on suspicion, and they will take good care not to set foot in France for some time to come."
"You are waiting for evidence, then?"
"We are waiting for evidence."
"How do you expect to get it?"
"We are having them watched. They are very quiet just now, but it won't be for long. Picard is too restless. Then we may arrest some one soon who will confess."
"Perhaps I could help. I am going to London. Will you give me Picard's address?"
"Here is his address, but I think you had better leave the case alone. You do not know the language, and you may merely arouse his suspicions if you interfere. Still, if you learn anything, communicate with me."
The former frank, honest expression in Adolph's eyes had given place to a look of cunning, that appealed to the instincts of a French police- officer. He thought something might come of this, and his instincts did not mislead him.
Delore with great craftiness watched the door of the house in London, taking care that no one should suspect his purpose. He saw Picard come out alone on several occasions, and once with another of his own stripe, whom he took to be Lamoine.