text: I would suggest that Miss Tuppence should go to bed , and that you and I , Mr. Hersheimmer , should share the vigil . " Tuppence was about to protest , but happening to glance at the bed she saw Mrs. Vandemeyer , her eyes half-open , with such an expression of mingled fear and malevolence on her face that it quite froze the words on her lips .
  
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  Mrs. Vandemeyer was lying unconscious on the bed .