seven o’clock
`` Of course -- quite so , whom else ? But what are the proofs ? '' `` We have evidence . In the first place , his mysterious disappearance at seven o'clock , or even earlier . '' `` I know , Colia told me that he had said he was off to -- I forget the name , some friend of his , to finish the night . '' `` H 'm ! then Colia has spoken to you already ? ''