about
half past four
Also -- there was no sign of Mr. Nayland Smith , and no sign of the American , Burke , who had led him to the place . '' `` Is it certain that they went there ? '' `` Two C. I. D. men who were shadowing , actually saw the pair of them enter . A signal had been arranged , but it was never given ; and at about half past four , the place was raided . '' `` Surely some arrests were made ? '' `` But there was no evidence ! '' cried Ryman .