A lonely doctor who once occupied an unusual lakeside home begins exchanging love letters with its former resident, a frustrated architect. They must try to unravel the mystery behind their extraordinary romance before it's too late.
- Genre: Romance, Drama, Mystery
- Studio: Village Roadshow Pictures, Warner Bros. Pictures, Vertigo Entertainment, Sound for Film
- Keyword: chicago, illinois, writing, architect, future, love letter, time, time travel, remake, architecture, mysterious letter, first kiss, passage of time, lake house
- Cast: Keanu Reeves, Sandra Bullock, Christopher Plummer, Ebon Moss-Bachrach, Willeke van Ammelrooy, Dylan Walsh