The Ghost and Mrs. Muir by R. A. Dick

Burdened by debt after her husband's death, Lucy Muir insists on moving into the very cheap Gull Cottage in the quaint seaside village of Whitecliff, despite multiple warnings that the house is haunted. Upon discovering the rumors to be true, the young widow ends up forming a special companionship with the ghost of handsome former sea captain Daniel Gregg. This novel inspired Joseph L. Mankiewicz’s cinematic romance starring Gene Tierney and Rex Harrison.