midnight
The corridor light showed his face . But Wagg did not accost the prisoner . The guard acted like a man who , whatever might be his particular interest in Vaniman , proposed to take plenty of time in getting acquainted . Once , after midnight , Wagg found the prisoner pacing ; Vaniman dared to relieve his feelings by groans , for the chorus of snores served as a sound-screen . `` Sick ? '' inquired the guard , whispering . `` No . ''