ten o'clock
`` Now you know you are not speaking the truth . Miss Whitworth was at Harrel last night with the rest of us . '' `` Yes , sir , but she came back to Rackham Park almost at once , '' said Jenny ; and Harry Luttrell 's face showed a sign of anxiety . After all , he had n't seen Joan himself in the ball-room until well after ten o'clock . `` I should have known that it was Miss Whitworth even if I had not heard her voice , '' and Jenny described how , on fetching Mrs. Croyle 's book , she had seen Joan unlatch the glass door of the library . Sir Chichester was shaken , but he pushed his blotting-paper here and his pen there , and pished and tushed like a refractory child . `` And how did she get back ?