In this book review, I prefer to summarize the plot with my own words. So, it may contain some spoilers.
Horace B. Otis who is a wealthy American, buy a damned (i.e. taunted) house in spite of warnings. His family consists of his wife, his eldest son (Washington), his daughter (Virginia), and his twin sons.
As soon as they move their new house, a stubborn stain becomes problem for days. Then the Canterville Ghost appears one night, but nobody gets scared contrarily. This situation makes our well known ghost feel disappointed and he decides to take revenge on them for that reason. Although he tries to do his best, he is more and more teased and ignored. Finally he accepts that he lose his former status and effect. And he begins to get depressed and become skin and bones.
During the visit of Duke of Cheshire, Virginia discovers the secret place of the ghost accidentally and comes across the ghost also. In the meanwhile, the ghost ask her for help in order to reach a peaceful death. Virginia accepts this offer and two of them get disappeared.
Virginia cannot be found for a while and this makes the Duke very upset. Virginia appears a few hours later and explains that the Canterville Ghost i.e. Sir Simon finally reach eternal peace. Sir Simon gives Virginia a box filled with jewels to show his affection before his death. Virginia leads her family to the secret place for Sir Simon’s dead body and four days later they makes a funeral in order to bury the carcass.
Afterwards, Virginia marries the Duke and never tell anyone about her experience with the Canterville Ghost. She holds in high esteem and affection for him and his memory.
Enjoy the reading.