弗罗姆·约翰·朗顿公爵和他的妻子，分娩过程中因并发症而出生的婴儿，一个霸气的保姆，保姆和女仆到达达格·蒙塔格音乐厅，接送费利西亚夫人的圣诞球。 傍晚，婴儿从婴儿床中被带走。 督察马洛里（Mallory）怀疑当秘密妻子抵达时代客的内部工作，而布朗对未婚妈妈在家中婴儿的出生更感兴趣。 在教区的压力下，麦卡锡太太在为公爵提供圣诞节服务的压力下，得到了她在the悔室发现的流浪者的意想不到的帮助。
The Duke of Frome John Langton with his wife, their baby born after complications during childbirth, a domineering nanny, nursery maid and valet arrive at Montague Hall for Lady Felicia's Yuletide ball. During the evening the baby is taken from his cot. Inspector Mallory suspects an inside job by the valet when his secret wife arrives while Brown is more interested in the birth of the baby at a home for unmarried mothers. Mrs McCarthy under pressure from the diocese to provide a Christmas service fit for a Duke receives unexpected help from a vagrant she finds in the confessional.
