Dir: Victor Saville
Starring: Robert Taylor and Elizabeth Taylor
A British Army Major leads a double life as a spy
This thriller is based on the 1948 novel of the same name by Humphrey Slater and it features a scene filmed at Holborn Underground station with 1923 Standard stock present. There are also a couple of scenes later on that feature ex-GWR Pannier Tanks hauling branch trains on the Bala Junction-Blaenau Ffestiniog line in North Wales. One is seen passing alongside a river, whilst another is seen arriving into Manod station hauled by 7400 Class No.7401.