John Krasinski and Natalie Portman are confirmed to lead the cast in Guy Ritchie's upcoming feature film, Fountain of Youth. Directed by Ritchie, renowned for his works like Lock, Stock and Two Smoking Barrels and Sherlock Holmes, the Apple Original project is penned by James Vanderbilt. Fountain of Youth: John Krasinski, Natalie Portman To Star in Guy Ritchie’s Upcoming Film.