Watch Root Letter (2022) HD Full Movie Free on solarmovie.do. Watch Root Letter (2022) online free. After Carlos, an impoverished teen from a fractured home, receives a desperate note from Sarah, a pe...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.