In the novel Hercule Poirot's Christmas, Walter Champion is the footman of Simeon Lee at Gorston Hall. His father had been a gardener, and Walter had been brought up in the area.

When Walter is waiting at the table during dinner, Tressilian is annoyed with him, because he hands the vegetables before the gravy despite being told not to do so, and drops a pear. Tressilian later criticises Water, and finds him "nearly, if not quite, impertinent".

After Simeon Lee is found dead, Walter answers the knocking at the front door, to fund Superintendent Sugden there. Walter is relieved, and said that he was just ringing up the police.

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