Classic British mystery/thriller with savage attacks at foggy Padington Station. Also notable for glimpses of post-WW II London . With Inspector MacDonald at the helm and a young beauty who reads Josephine Tey.

'They were five strangers on a fogbound train--a psychiatrist's pretty secretary, an agitated young man, a tweedy lady with a deep voice, a stockbrockerish businessman, and an eel-like "spiv." One was brutally attacked in the choking black fog in Paddington Station. Attempted murder became bona-fide manslaughter, and examination of the intimate lives of the passengers involved Chief Inspector MacDonald in a macabre game of hide-and-seek in which one man tried to find his identity and another was ready to kill to preserve the shroud of darkness that obscured his.'