predict what the play script is about.

Sorry, I don't have "the blurb" that you are referring to.

My prediction after reading the blurb is that the reader is going to be full of mysteries because Sherlock Holmes and his friend, Waston, were ordered to solve the mysteries because there is been a murder of Douglas and they had to solve many mysteries to get the murderer. It also tells that something had happened in his past that led to his, Douglas’s, death.

I actually can't make it in 200 words but according to my book's blurb this is what I got 😅