This is very similar to Cage of Gold where a disappeared David Carter returns to blackmail his remarried wife Jean Simmons.Here we have Dennis Price a very effective and devious blackmailed come back from the dead to blackmail Renee Asherson.It is a very entertaining film notwithstanding it's very limited budget.However there is a bit of a hole in the plot.Firstly she would have received a death certificate for Price and secondly she would have been described on the marriage certificate to Barr as a widow.So Barr would have known that she had been married before.Price was on his way down when making this.So he had to make whatever was given to him.So we have a lot of performances to treasure.