''The Sign of Four'' by Conan Doyle

,,The Sign of Four'' is detective book written by Conan Doyle. I read this book three week ago.  I chose it because I adore detective stories. ,,The Sign of Four'' is another book that tells about adventures Sherlock Holmes.

The story is about private detective Sherlock Holmes and his best friend John Watson who they're unriddling mysterious disappearance father's Mary Morstan. From the disappearance of her father, she gets a letter with a pearl every year. The last letter was a proposal to meet a mysterious sender. The woman asks for help from the Sherlock and Watson because the letter was written not to signed the police up. While unriddling, they come across the track of the sign of four and try to find out how is related to the disappearance father's Mary. 
   
I think that book is very interesting. The book is overcrowd of mystery and adventure. The author apply a lot of plot twists and unexpected events.
 
I really recommended that book. The book will go down well with anyone who likes detective story.