This is quite an enjoyable vehicle for a mischievous Glynis Johns, who doubles up as a gymnastics teacher ("Caroline") who is left a remote house on the Cornish coast, and a mermaid ("Miranda") who lives with her equally cheeky friend "Berengaria" (Dora Bryan) in a cave underneath. The two characters have a common ancestor and look identical, so when "Caroline" heads off on a cycling trip, her mermaid cousin takes her place - and immediately starts to charm just about every man in the village. Many of us who recall later performances from (Sir) Donald Sinden may forget just how handsome he was... read the rest.