Un crimen casi perfecto que solo Poirot puede resolver.
La seorita Arundell es una acaudalada anciana solterona a quien sus sobrinos desean ver muerta para;poder desahogarse de sus apremios econmicos. Cuando sufre un accidente al caer por las escaleras, todos lo achacan a la pelotita de goma dejada por Bob, su perro. Pero la anciana desconfa, y piensa que han tratado de asesinarla. El 17 de abril escribe una carta a Poirot solicitando su ayuda, pero este no la recibe, misteriosamente, hasta el 28 de junio. Para ese entonces, la seorita Arundell ha sido asesinada, y el nico testigo del crimen es Bob, su querida mascota.
ENGLISH DESCRIPTION In Agatha Christie's Dumb Witness, Hercule Poirot investigates the very suspicious death of an elderly spinster who, fearing the very worst, had written to the great detective prior to her demise. Everyone blamed Emily Arundell's accident on a rubber ball left on the stairs by her frisky terrier. But the more she thought about her fall, the more convinced she became that one of her relatives was trying to kill her.... On April 17th she wrote her suspicions in a letter to Hercule Poirot. Mysteriously, he didn't receive the letter until June 28th...by which time Emily was already dead....