In post-WW2 Britain, a young woman marries an old flame but after he disappears, and is later declared dead, she re-marries, only to be blackmailed by the supposedly-dead first husband who suddenly re-appears in her life, in need of money.
Articles with substantial mentioning of Cage of Gold
Mark Duguid,
The dark side of Ealing, in: Sight & Sound, nr. 11 (November), 2012 pp. 54-61