eight o’clock
The Growler went with them . So as not to arouse suspicion , Lupin chose a large town as his headquarters . At Amiens , where he installed Clarisse , he was only eighteen miles from Montmaur . At eight o'clock he met the Masher not far from the old fortress , which was known in the neighbourhood by the name of Mortepierre , and he examined the locality under his guidance . On the confines of the forest , the little river Ligier , which has dug itself a deep valley at this spot , forms a loop which is overhung by the enormous cliff of Mortepierre . `` Nothing to be done on this side , '' said Lupin . `` The cliff is steep , over two hundred feet high , and the river hugs it all round . ''