Keanu Reeves and Sandra Bullock (Finally! A Speed reunion!) come together again for this romantic mystery, a remake of a lovely if confusing Korean film. Bullock plays a lonely doctor who begins exchanging letters with a frustrated architect (Reeves). Turns out Bullock and Reeves are actually living in the same lakeside vacation home, but exist two years apart and are communicating through a magical mailbox. ... I told you it was confusing. Despite the film's heavy requirement of suspension of disbelief, Argentinean director Alejandro Agresti (Valentín) infuses it with lots of pretty pictures and a decent sense of mystery.95 minutes PG.