“Shawshank” was an underwhelming box-office performer when it hit
theaters 20 years ago this September, but then it began to redeem
itself, finding an audience on home video and later becoming a
fixture on cable TV.
The film has taken a near-mystical hold on viewers that shows no
sign of abating. Steven Spielberg once told the film’s
writer-director Frank Darabont that he had made “a chewing-gum
movie — if you step on it, it sticks to your shoe,” says Mr.
Darabont, who went on to create “The Walking Dead” for AMC.