No Name by Wilkie Collins

Early the next morning Miss Garth and Norah met in the garden and spoke together privately. The only noticeable result of the interview, when they presented themselves at the breakfast-table, appeared in the marked silence which they both maintained on the topic of the theatrical performance. Mrs. Vanstone was entirely indebted to her husband and to her youngest daughter for all that she heard of the evening's entertainment. The governess and the elder daughter had evidently determined on letting the subject drop.

After breakfast was over Magdalen proved to be missing, when the ladies assembled as usual in the morning-room. Her habits were so little regular that Mrs. Vanstone felt neither surprise nor uneasiness at her absence. Miss Garth and Norah looked at one another significantly, and waited in silence. Two hours passed -- and there were no signs of Magdalen. Norah rose, as the clock struck twelve, and quietly left the room to look for her.