Murder, She Wrote: South by Southwest

At the height of the frontier era, a train races through the Rocky Mountains on a classified mission to a remote army post. But one by one the passengers are being murdered, and their only hope is the mysterious John Deakin, who's being transported to face trial for murder.

A murder witness can't convince the police that the killer lives in the apartment across the courtyard from him, and he realizes he is the sniper's next victim.

Trapped in a London subway station, a woman who's being pursued by a potential attacker heads into the unknown labyrinth of tunnels beneath the city's streets

A TransSiberian train journey from China to Moscow becomes a thrilling chase of deception and murder when an American couple encounters a mysterious pair of fellow travelers.

Several people start receiving voice-mails from their future selves -- messages which include the date, time, and some of the details of their deaths.

A Witness Protection specialist becomes suspicious of his co-workers when dealing with a case involving high-tech weapons.

No good deed goes unpunished for Lena Karelson (Wynne Gibson), hooker with a heart of gold trying to go straight in the big city. Covering a bachelor party for a friend in need, Lena winds up at a gambling house where she is the sole witness when Mayor Wentworth's drunken lout of a son shoots the owner. Wentworth's political machine wants Lena to falsely incriminate mob boss Callahan to bolster their re-election campaign. Callahan's mouthpiece nabs Lena first, conveying her stealthily by train from Toledo to New York to prevent her from testifying against the big boss. A midnight special smash-up, a tense courtroom finale and true love triumphant round out this typical Fox pre-Code programmer, released just before the Legion of Decency dropped the hammer in 1934.

The plot of Marine Express can be described in two parts. The first part focuses on the people boarding the train and the problems they encounter on it. The second part takes place after the train has stopped at its half-way point, an island that used to be home to an ancient civilization millennia ago and has its fair share of secrets.

Agatha Christie's classic whodunit speeds into the twenty-first century. World-famous sleuth Hercule Poirot has just finished a case in Istanbul and is returning home to London onboard the luxurious Orient Express. But, the train comes to a sudden halt when a rock slide blocks the tracks ahead. And all the thrills of riding the famous train come to a halt when a man discovered dead in his compartment, stabbed nine times. The train is stranded. No one has gotten on or gotten off. That can only mean one thing: the killer is onboard, and it is up to Hercule Poirot to find him.

Divorcee learns from the FBI that her husband has mafia connections and put a contract on her life. She gets into the witness protection program and falls in love with the agent who protects her.

After Regina Lampert falls for the dashing Peter Joshua on a skiing holiday in the French Alps, she discovers upon her return to Paris that her husband has been murdered. Soon, she and Peter are giving chase to three of her late husband's World War II cronies, Tex, Scobie and Gideon, who are after a quarter of a million dollars the quartet stole while behind enemy lines.

On the eve of World War II, zany heiress Amanda Kelly travels by train to Switzerland. While passing through Germany, she meets a sweet elderly lady, who suddenly vanishes. Distraught, she questions her fellow passengers who claim that the woman was never there. Unsure if it's all in her mind or if there's a more sinister plot afoot, Amanda teams up with photographer Robert Condon to discover the truth.

On a train headed for England a group of travelers is delayed by an avalanche. Holed up in a hotel in a fictional European country, young Iris befriends elderly Miss Froy. When the train resumes, Iris suffers a bout of unconsciousness and wakes to find the old woman has disappeared. The other passengers ominously deny Miss Froy ever existed, so Iris begins to investigate with another traveler and, as the pair sleuth, romantic sparks fly.

Six people travel by train overnight from Marseilles to Paris. When the train arrives at its destination, one of the passengers, a girl, is found dead in a sleeping berth. The police led by Inspector Grazzi investigate the other five passengers, suspecting that one of them was responsible. However, as the investigation is stepped up, the other passengers start turning up dead. It is then up to the last remaining two to solve the case, before they become the next victims.

In 1935, when his train is stopped by deep snow, detective Hercule Poirot is called on to solve a murder that occurred in his car the night before.

Infatuated with the idea of becoming rich, college student Jonathan Corliss secretly dates Dorothy Carlsson to gain the approval of her wealthy father. When Dorothy tells Jonathan that she is pregnant and that her father will deny her inheritance if he finds out, Jonathan murders her, but he stages her death as a suicide. As Jonathan works his way onto Mr. Carlsson's payroll, Dorothy's twin sister, Ellen, investigates the apparent suicide.

An L.A. District Attorney attempts to take an unwilling murder witness back to the United States to testify against a top-level mob boss. Frantically attempting to escape two deadly hitmen sent to silence her, they board a Vancouver-bound train only to discover that the killers are onboard with them. For the next 20 hours, as the train hurls through the beautiful but isolated Canadian wilderness, a deadly game of cat and mouse ensues in which their ability to tell friend from foe is a matter of life and death.

An art dealer on a special mission is pulled into dangerous intrigue while railway detective Cheval tries to help and pursues criminals on the Istanbul Express.

Frank Johnson, a sole witness to a gangland murder, goes into hiding and is trailed by Police Inspector Ferris, on the theory that Frank is trying to escape from possible retaliation. Frank's wife, Eleanor, suspects he is actually running away from their unsuccessful marriage. Aided by a newspaperman, Danny Leggett, Eleanor sets out to locate her husband. The killer is also looking for him, and keeps close tabs on Eleanor.

A switchman at a seaside railway witnesses a murder but does not report it after he finds a suitcase full of money at the scene of the crime.