Read it through once

Van Helsing returned in a couple of hours, and presently said to me: “Now you go home, and eat much and drink enough. Make yourself strong. I stay here to-night, and I shall sit up with little miss myself. You and I must watch the case, and we must have none other to know. I have grave reasons. No, do not ask them; think what you will. Do not fear to think even the most not-probable. Good-night.”