Twice Upon a Time (1953 film)

Twice Upon a Time is a British 1953 comedy film, directed by Emeric Pressburger based on the book Lottie and Lisa by Erich Kstner. It concerns a pair of twin sisters who are separated, when their parents divorce. They meet again by accident, when they are both sent to the same summer camp and they hatch a plan to meet up again. Later films based on the same plot were titled The Parent Trap, Do Kaliyaan.

Source: Wikipedia