When John North, a budding author, pulls the communication cord of a late-night train while traveling with his publisher's wife, he sets in motion a chain of events including a train crash, a murder, and a police manhunt. However, all is not what it seems in this suspenseful drama. Cast: - Valerie Hobson as Carol North - Richard Todd as John North - Christine Norden as Susan Wilding - Tom Walls as Mr. Clayton - Ralph Truman as Inspector Waterson - Vida Hope as Miss Marchment, owner of Danver's Hotel - Alexander Gauge as Jerves Wilding - Dora Bryan as Waitress at Station Cafe - Arnold Ridley as Mr. Saunders - Cyril Smith as George, the barman - Arthur Lane as Constable Cowley - Nigel Neilson as Sergeant Sanger - Dora Sevening as Wilding's mother - Elsie Wagstaff as Wilding's Maid - Alan Gordon as Ticket Inspector - Vincent Ball as 1st Rescue Worker at Crash Site - Jack Vyvian as 2nd Rescue Worker at Crash Site - Roger Moore as Soldier in Paddington Café - Gwynneth Vaughan as Girl with the Soldier Runtime: 80 minutes