four o'clock
`` We 'll consider it arranged . I 'll fix him out in a week . '' Holmes left me at this point , and for two days I heard nothing from him . On the morning of the third day he telephoned me to meet him at the stage-door of the Metropolitan Opera-House at four o'clock . `` Bring your voice with you , '' said he , enigmatically , `` we may need it . '' An immediate explanation of his meaning was impossible , for hardly were the words out of his mouth when he hung up the receiver and cut the connection . `` I wanted to excite your curiosity so that you would be sure to come , '' he laughed , when I asked his meaning later .