The big clock outside struck 7.30. Early as it was, Inspector Stoddart was already in his room at Scotland Yard.<br />He looked up impatiently as his most trusted subordinate, Alfred Harbord, entered after a sharp preliminary tap.<br />&quot;Yes, sir. You sent for me?&quot;<br />The inspector nodded. &quot;You are detailed for special duty at once. We are starting in the runabout immediately, so if you want to send a message?&quot; He nodded at the telephone.<br />Harbord grinned. &quot;My people are pretty well used to my irregular habits, thank you, sir.&quot;<br />The inspector rose. &quot;The sooner we are off the better, then.&quot; He handed Harbord a typewritten paper. &quot;Wired up,&quot; he said laconically, &quot;from the Downs.&quot;<br />&nbsp;