Walter, Grace & The Submarine Walter is new in town. Grace is leaving town. After sparking an untimely connection, the two decide to spend one weekend exploring Grand Rapids together before separating. Details Casts Posters Title Walter, Grace & The Submarine Release Date Runtime 01 Hours 40 Minutes Genres Romance Comedy Drama Production Companies SoliFilm Productions Production Countries Kyle Patrick... Walter Moore... Jessie Carl... Grace Nelson... Lauren Patchett... Morgan... Jonathan Connolly... Matt... Opposite Girl... Colleen Randolph... Original Size (1500x2000) Original Size (2000x3000)