Originally Posted by Gooby:
“watched the last episode again yesterday and noted the IOU theme is there in a few extra places. e.g. there is graffiti on the wall opposite Sherlock's front door when Watson goes back to see Mrs Hudson as he thinks she is shot.
Is there any explanation of the IOU?”
“watched the last episode again yesterday and noted the IOU theme is there in a few extra places. e.g. there is graffiti on the wall opposite Sherlock's front door when Watson goes back to see Mrs Hudson as he thinks she is shot.
Is there any explanation of the IOU?”
The only current explanation is the IO U meaning 10 you, as in Sherlock having the binary code to the super secret special key. If it has a secondary meaning, not sure what it would be.




Russell Tovey. Oh wow. 


Plus, she's lovely
Ugh. (Quite funny with the DM gag in the first episode too! 