Written by Eric Ambler
Directed by Roy Ward Baker
Jim Ackland (John Mills) is riding the bus with his niece one dark and stormy night. The vehicle is filled to the brim with passengers, some fast asleep, others enjoying time with their loved ones. Fate sees that Jim’s life is turned upside down however, as a mechanical failure sends the bus off track, crashing into a wall. The last thing Jim recalls before blacking out is the harrowing horn of an oncoming train. Months later, Jim is finally relieved from his hospital stay, although warned by the doctor that his recovery from the fracture in his skull will require time, and that he may even experience difficult episodes of relapse. Confident that things are on the mend, Jim rents a hotel room as his new living quarters and finds employment at a nearby chemical lab.