My name is Doctor Watson . I am writing this story about my friend , Mr Sherlock Homes , the famous detective.
Sherlock Homes lives at 221B Baker Street, in the middle of London. My story begins in Baker Street, one morning in 1889, when a men knocked on the door.
I heard the men say, 'Me Holmes? My name is Dr Mortimer. I need your help.'
'Come in,' said Holmes. 'How can I help you?'
'I have a strange story to tell you, Mr Holmes,' said Dr Mortimer. 'My story is very strange. Perhaps you will not believe me.'