Roxy Hunter and the Mystery of the Moody Ghost (2007) on Netflix

Plot summary

In 1944, the soldier Ted Caruthers was engaged to Estelle, and her father's gun stopped the engagement. Sixty-three years later, nine-year-old Roxy Hunter arrives in Serenity Falls with her mother Susan Hunter and moves into Moody Mansion, an old house that some local bullies tell them is haunted. Roxy is an irrepressible super sleuth, and her best friend Max, a twelve-year-old genius she calls her fiancé, helps her. The house draws her into a world of unsolved mysteries, and she sets out to solve a crime, to save the home they have just moved into, and to reunite a love that was lost.