Root Letter After Carlos, an impoverished teen from a fractured home, receives a desperate note from Sarah, a pen pal he lost touch with a year ago, he uses her letters to solve the mystery of her disappearance and crimes she may have been a part of. Details Casts Videos Galleries Posters Title Root Letter Release Date 2022-09-01 Runtime 01 Hours 27 Minutes Genres Drama Thriller Production Companies Ammo Entertainment, KADOKAWA Production Countries United States of America Danny Ramirez... Carlos Alvarez... Keana Marie... Sarah Blake... Lydia Hearst... Karen Blake... Mark St. Cyr... Adam... Sam A Coleman... Jackson... Breon Pugh... Caleb... Kate Edmonds... Zoe... Terry J. Nelson... William Hayden... Dodie Brown... Diane Hayden... Jonetta Kaiser... Mia... Anne Nichols Brown... Hailey... Nina Leon... Mrs. Karn... Tim J. Smith... Father... Yuji Ayabe... Postal Carrier... Gerardo Davila... Daniel... Charlie Caldwell... High Schooler... Anna Donnell... Doctor... Hailey Frey... Kelly... Eric Gibson... Karen's Boyfriend... James Kendrick... High School Student... Marcus Wayne... College Kid... Official Trailer (Trailer) Original Size (3840x2160) Original Size (1920x1080) Original Size (1382x2048) Original Size (1682x2492) Original Size (1067x1600)