Lotte and Lisa had already been adapted into the films Two Times Lotte (1950) and Hibari no komoriuta (1951). Twice Upon a Time was the first English-language film adaptation; the story was later twice adapted as The Parent Trap (1961 and 1998) and has been remade a number of times in English and many other languages. It was shot at Shepperton Studios with sets designed by the art directorArthur Lawson.
The film is the only solo directing credit for Pressburger, whose other directing credits are in association with Michael Powell.
Plot
Twin sisters are separated when their parents divorce. They meet again by accident when they are sent to the same summer camp, and they hatch a plan to reunite their parents.