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# Dumb Witness
- URL: https://www.cascadepbs.org/show/agatha-christies-poirot/episode/dumb-witness-5cnoma/
- Published: 2025-09-17T22:21:54.000Z
- Updated: 2026-06-10T09:01:24.000Z
- Description: Poirot knows that Bob the terrier is the only one who knows the identity of a killer.
- Author: Cascade PBS Staff
- Tags: Agatha Christie's Poirot, Season 6, Episode 4, #ZZZ_Episode_2fe22d57-3e5a-4f7b-93f8-3af7bee0fc5f, #episode, #ZZZ_Show_b625189f-cac1-40be-b296-52d193ea9b0a, #v1.16

The Tripp sisters tell Poirot that they have had a supernatural warning that lives are in danger. After a series of near misses, Emily Arundel is found dead. Far from being guilty of Emily’s death, Bob the terrier is the only one who knows the identity of her killer. Poirot understands that his silent witness must find his own way of telling him what he saw that night.