But how the deuce did anyone enter the house?
The door certainly opened at half-past ten o'clock, either to let someone in or someone out.

But the bell did not sound for half an hour later.

Can there be any outlet to that house, and is it connected with the unfinished mansion of Lord Caranby, used as a factory ?" This was all theory, but Jennings could deduce no other explanation from the evidence he had collected.

He determined to search the unfinished house, since Caranby had given him permission, and also to make an inspection of Rose Cottage, though how he was to enter on a plausible excuse he did not know.

But Fate gave him a chance which he was far from expecting.