twenty-five
minutes past twelve
`` Those are my credentials , Mr. Guthrie , '' he said ; `` so no doubt you will realize that the business which brings me and my friend , Dr. Petrie , here at such an hour is of the first importance . '' He switched off the light . `` There is no time for ceremony , '' he explained . `` It is now twenty-five minutes past twelve . At half-past an attempt will be made upon your life ! '' `` Mr. Smith , '' said the other , who , arrayed in his pajamas , was seated on the edge of the bed , `` you alarm me very greatly . I may mention that I was advised of your presence in England this morning . ''