three o'clock
`` Still ... you 've seen him ? '' `` I ? No . He simply wrote asking me to receive you both , to send away my servants before three o'clock and to let no one into my flat between the time of your arrival and his departure . If I did not consent to this proposal , he begged me to let him know by means of two lines in the _ Écho de France _ . But I am only too pleased to do Arsène Lupin a service and I consent to everything . '' M. Gerbois moaned : `` Oh , dear , how will it all end ? ''