This is quite an effective little mystery that reminded me at times of "Gaslight" (1944).Claudette Colbert wakes up, suddenly, on a train without any idea how she got there.Repatriated with her husband "Richard" (Don Ameche) she continues to have dizzy spells, increasingly frequent moments of disorientation; she even seems to try to commit suicide.Luckily for her, "Bruce" (Robert Cummings) is on hand to try and fathom out what's happening to her. ...