Cliff Bemis

A man endangers his own life when he uncovers an assassination plot while investigating his father's death. (imdb)

Jessica Fletcher is on a train headed for El Paso. She shares a table in the dining car with a woman who subsequently vanishes, leaving her purse on the table. Then a message is announced for the woman and Jessica accepts it. This leads to an attack in her compartment and a demand for 'it'. She has no idea what 'it' is and is rescued by a man claiming to be a journalist. The plot thickens. (imdb)