4:15
`` The same , '' replied my friend . `` Should you know him if you saw him ? '' `` Anywhere , sir . '' `` Do you know if he was in the 4:15 express yesterday afternoon ? '' `` He was not , sir . '' `` How can you answer so positively ? '' `` Because I looked into every carriage and saw every face in that train , and I could take my oath that Mr. Dwerrihouse was not in it .