Rebecca by Daphne Du Maurier

In Monte Carlo, our heroine is swept off her feet by the dashing widower Maxim de Winter and his sudden proposal of marriage. Orphaned and working as a lady's maid, she can barely believe her luck. It is only when they arrive at Manderley, her husband's cavernous estate on the Cornish coast, that she realizes how vast a shadow his late wife, Rebecca, will cast over their lives--introducing a lingering evil that threatens to destroy their love from beyond the grave.