seven
o'clock
`` There certainly appeared to be evidence against him , but of course you must be aware that I know him to be innocent . '' `` How ? '' `` Because I was with him when the crime was committed . At half-past seven o'clock of that evening we were walking toward the Grand Central Depot . `` We had dined in our flat . The people who say they saw us go out tell the truth . `` But we came back .