There are times in this film when I could quite cheerfully have hung Walter Huston's "Davidson" from the yardarm... Joan Crawford is "Sadie Thompson" - a prostitute merrily plying her trades on a South Pacific island with the visiting American troops. The arrival of the seriously puritanical "Davidson" couple - Huston and wife Beulah Bondi - soon puts a cramp in her style, though. Their shock and disgust at this slatternly behaviour leads them to try to get her deported back to America (where she has a bit of a wicked past), ostensibly in a bid to save her moral soul. Crawford is super as…