In Chapter 1, Holmes shows Watson a letter he has just received. There is no name on the letter but it advises them of the imminent arrival of a visitor with a problem. Sure enough, at a quarter to eight, there is a knock on the door.

Saving the audio to your computer

To save audio files to your computer, simply left-click on the file, then right-click on ‘Right-click here to download’. Choose the ‘Save target as’ option, then select the folder that you would like to save the audio in and click ‘Save’.