Lauren Holly, Cameron Bancroft and Lucie Guest have also been cast in the film, which is based on author and columnist Ronda Rich's bestselling novel of the same name.
In the film, Holly stars as as successful author and fiercely independent Southern woman Abby Houston, who finds herself being held captive in a remote cabin by an obsessed fan.
Harper -- who shocked fans earlier this year when she announced that she has terminal brain cancer -- will play Charlotte, the owner of a bed-and-breakfast in the fictional town of Bliss. The townspeople of Bliss plot to set Houston up with their widowed mayor, Spencer Alexander (Bancroft), a single father of two.
UP's Barbara Fisher said "This uplifting, sometimes bumpy romance showcases how a community’s spirit and good will can help people connect and find each other."
