"That's all very well, Mr. Amberley, but we've been into his record. There's nothing to it. You're on to a false trail. He lives in Earl's Court in a small flat with his sister which they've let for a month. She works as secretary to Anne March."
"I want Mark Brown watched."
"I take my orders from the chief constable, Mr. Amberley."
"Very proper. Do you mind if I use your telephone?"
"Of course, if you've got any real reason for having him watched, that makes a difference," said the inspector, beginning to hedge. "What have you found out about him?"
"So far, nothing. I shall be able to answer that question more fully in - say, a couple of days' time."
"Suspicions, eh, sir? The police want more than that to go on, I'm afraid."
"Which is why I don't propose to burden you with them."
The inspector fingered his chin, glancing sideways at Amberley. "Perhaps you'd better tell me what you have in your mind, Mr. Amberley," he said at last. "I may as well hear it. Do you suspect him of having committed the murder?"
"I should think it extremely improbable that he had anything to do with it."