George Baker and Terrence Morgan play the Mansell Brothers about as different as brothers can get. Baker has gone to London where his gambling has put him in debt with some bad people. He decides to go home to his north of England factory town and hole up there for a bit.
Where he's reunited with his rather dull brother Morgan who is a bookkeeper in a factory. His life is enlivened by the presence of Diana Dors who is one high maintenance indulgence for him. But pretty soon she also has Baker's wheels spinning too.
Because she's so high maintenance Morgan is short in his accounts at the factory and an audit is coming. Baker's and Dors's solution is rob the place to cover the theft and incidentally pay off the nasty people Baker owes.
For all his worldliness Baker himself is no professional criminal so when the Mansell Brothers go out to steal everything goes wrong.
Diana Dors was the United Kingdom's answer to Marilyn Monroe. But Monroe even in her most voluptuous role in Niagara had nothing on Diana Dors in Tread Softly Stranger. One look at her you see why Baker and Morgan were goners.
Tread Softly Stranger is worth seeing for one sexy bundle from Britain named Diana Dors.