TheDukeofFromeJohnLangtonwithhiswife,theirbabybornaftercomplicationsduringchildbirth,adomineeringnanny,nurserymaidandvaletarriveatMontagueHallforLadyFelicia'sYuletideball.Duringtheeveningthebabyistakenfromhiscot.InspectorMallorysuspectsaninsidejobbythevaletwhenhissecretwifearriveswhileBrownismoreinterestedinthebirthofthebabyatahomeforunmarriedmothers.MrsMcCarthyunderpressurefromthediocesetoprovideaChristmasservicefitforaDukereceivesunexpectedhelpfromavagrantshefindsintheconfessionaccc
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