Two poor sisters inherit a giant villa from their uncle, along with his custodian Salvatore who charms his way into their lives and marries one of them.

Agnes and Ellen Isit, two poor English sisters, unexpectedly inherit from their uncle a rich estate near Naples, complete with big villa and manly Italian majordomo. The latter, Salvatore, makes use of his Latin charm to seduce Agnes, who soon turns from prim spinster to passionate lover. Ellen observes the romance with amusement first, before realizing how less considerate Salvatore becomes after marrying Agnes. Worse, Agnes's health starts deteriorating. Worried about her sister, she contacts Dr. Ben Dench, a family friend.—Guy Bellinger