Disney's desire to capitalize on their new hit "It Girl" from POLLYANNA, Hayley Mills, led them to cast her twice in one film the next year, resulting in the granddaddy of all split-screen double movies. Susan meets Sharon at summer camp (Mills in dual roles), and they discover they were twin sisters separated at birth by divorce. The sisters switch places for the summer, then scheme and plan a reunion of their parents, Maureen O'Hara and Brian Keith. Mills worked tirelessly to perfect her American accent for the part of Sharon, and her performance is a prime example of child acting at its most versatile. Great supporting work from under-appreciated ’30's and ’40's veteran Una Merkel and Charles Ruggles. POLLYANNA director David Swift once again scores a huge hit writing and directing this timeless classic that has spawned and inspired three sequels, three remakes, PULP FICTION, a "Simpsons" episode and sisters everywhere. Camera work by the great Peckinpah cinematographer Lucien Ballard. As always wonderful songs provided by the Sherman brothers (“Let’s Get Together” and the title sequence’s “Parent Trap”). Also featuring Leo G. Carroll and Nancy Kulp.