All you have to do is to take note of what the fellow does.

If he has any accomplices within the hotel we shall probably be able by that means to discover who the accomplice is.' Lighting a match and shading it with his hands, Racksole showed them both out of the little cellar.

'Now if you lock this glass door on the outside he can't escape this way: the panes of glass are too small, and the woodwork too stout.

So, if he comes into the trap, you two will have the pleasure of actually seeing him frantically writhe therein, without any personal danger; but perhaps you'd better not show yourselves.' In another moment Felix Babylon and Nella were left to themselves in the darkness of the cellar, listening to the receding footfalls of Theodore Racksole.

But the sound of these footfalls had not died away before another sound greeted their ears--the grating of the small cellar was being removed.
'I hope your father will be in time,' whispered Felix 'Hush!' the girl warned him, and they stooped side by side in tense silence.
A man cautiously but very neatly wormed his body through the aperture of the grating.