In the novel Dumb Witness, Miss Jenkins is the secretary at Gabler & Stretcher, house agents in Market Basing.

Miss Jenkins is described as being a "young woman with adenoids and a lacklustre eye".

When Poirot and Hastings go to the office of Gabler and Stretcher, Miss Jenkins is unable to give them any particulars of Littlegreen House, although she does tell them that it is to be sold outright. However, when Mr Gabler asks her for the particulars a short time after, she is able to bring them to him.

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