Carey Mulligan (left), Keira Knightley, and Andrew Garfield play clones reared for organ donation in “Never Let Me Go.’’ (Alex Bailey/Fox Searchlight Pictures) by Henrick Vartanian 1.3k Views Carey Mulligan (left), Keira Knightley, and Andrew Garfield play clones reared for organ donation in “Never Let Me Go.’’ (Alex Bailey/Fox Searchlight Pictures)