midnight
`` Yes , he seemed the chief scoundrel among them . I heard him called Professor Ruggles . '' `` He is about as much a professor as I am , '' answered Bernard . `` HE is the man we want for that midnight crime on the express train . I have evidence enough now , Dyke , to prove that this man is the guilty principal , and I also believe that one of his accomplices is now in prison . '' `` Indeed ! '' And then the detective groaned in anguish of spirit and of body .