typewriter key?
                    Hello - thanks if anyone can help.  Am I right in thinking there is a book where the murderer is found because of the pressure he/she puts on a particular typewriter key?
If anyone could let me know if I'm right - and if so what book it is - that would be fab.
thanks so much
                
                            If anyone could let me know if I'm right - and if so what book it is - that would be fab.
thanks so much
                        
                        
Comments
The text of the novel is available from Project Gutenberg, Australia, here:
http://gutenberg.net.au/ebooks04/0400241h.html
~O)