nine o'clock
Don Luis Perenna went with Mazeroux to the commissary 's office at Passy , where Mazeroux , on Perenna 's instructions , gave his name and asked to have M. Fauville 's house watched during the night by two policemen who were to arrest any suspicious person trying to obtain admission . The commissary agreed to the request . Don Luis and Mazeroux next dined in the neighbourhood . At nine o'clock they reached the front door of the house . `` Alexandre , '' said Perenna . `` Yes , Chief ? '' `` You 're not afraid ? ''