nine o'clock
`` Your wireless said we was wanted by the secret service , '' said the puzzled lieutenant , `` but these boys do not belong to the secret service . And I do n't know you , either . '' `` I will explain everything , '' said Captain Hardy , `` but make haste . We 're after German spies that are to meet at Hell Gate at nine o'clock . Crowd on every ounce of steam you can . '' `` Hell Gate ! '' said the lieutenant sarcastically .