A MURDER ON THE BEACH

Linda Stevenson was teenage who go with her parents to live to Penmarron by London. She was staying walk in the beach when she saw a dead body.
She go to the police station but the police doesn't believe she because they doesn't find the body.
After this, Linda meet Mark , a Penmarron towner.
They go to the beach and see a man or woman in the beach.
They think that she or he is a person who lives in the mansion, and go there to answer the mistery. In the mansion lives One rich mrs and her sister, Julia who want to be a holliwood actress.
In the end of the history the mistery is solved, the murder is Julia and the dead body is Mrs Landsman, her sister. Julia kill her sister because she wants to her money.
After this Julia and her friends go  out from the police and they crashed into a rock and the police found them and go to the prison.

In my opinion this is a good book because in all the history you doesn't know the murder. So. this is a perfect book of intrigue.
Also, I recommend this book to a people who likes "police books" because is this, all the time you think who is the murder.