Can someone check these sentences, please? Thank you very much.

1) The ghost wears a white shroud and a notice hangs from its neck saying “ The Otis Ghost The Only True and Original Spirit ignore all imitations”. (Is the punctuation correct?)
2) When they arrive at the house, they already know that there is a ghost because Lord Canterville has warned them.
3) Washington Otis, the eldest son, removes the stain with “ Pinkerton’s Champion Stain Cleaner”, the latest American stain remover.
4) Several nights later, the ghost appears to Mr. Otis. He has got burning-red eyes and his long, grey hair is thick and dirty. He wears old-fashioned clothes and heavy chains hang from his wrists and ankles.
5)Years later she tells her husband that Sir Simon helped her understand that love is stronger than both

1) The ghost wears a white shroud and a notice hangs from its neck saying, “The Otis Ghost The Only True and Original Spirit ignore all imitations."

2) OK

3) Washington Otis, the eldest son, removes the stain with “Pinkerton’s Champion Stain Cleaner”, the latest American stain remover.

4) Several nights later, the ghost appears to Mr. Otis. He has got burning-red eyes, and his long, grey hair is thick and dirty. He wears old-fashioned clothes, and heavy chains hang from his wrists and ankles.

5) Years later, she tells her husband that Sir Simon helped her understand that love is stronger than both <~~~Is this sentence finished? If so, put a period there, but if not add the remaining words and then put a period at the end!