Episode Detail: Poirot: The Dumb Witness - Mystery!
"Dumb Witness," conclusion. Poirot (David Suchet), Hastings and Bob the dog try to piece together how a salt shaker and a bottle of phosphorus are linked to Emily's demise. Hastings: Hugh Fraser. Charles: Patrick Ryecart. Theresa: Kate Buffery. Bella: Julia St. John.