111 was not to be re-let to anyone until further orders.

At the bureau they gave him Nella's note, which ran thus: Dearest Papa,--I am going away for a day or two on the trail of a due.
If I'm not back in three days, begin to inquire for me at Ostend.

Till then leave me alone .-- Your sagacious daughter, NELL.
These few words, in Nella's large scrawling hand, filled one side of the paper.

At the bottom was a P.T.O.He turned over, and read the sentence, underlined, 'P.S .-- Keep an eye on Rocco.' 'I wonder what the little creature is up to ?' he murmured, as he tore the letter into small fragments, and threw them into the waste-paper basket.
Then, without any delay, he took the lift down to the basement, with the object of making a preliminary inspection of Rocco in his lair.

He could scarcely bring himself to believe that this suave and stately gentleman, this enthusiast of gastronomy, was concerned in the machinations of Jules and other rascals unknown.