Captain Gregson's name was initially released as Tobias "Toby" Gregson, but when the show aired it was released as Thomas "Tommy" Gregson. |
Detective Bell shares his name with one of Sir Arthur Conan Doyle's inspirations for Holmes, Dr. Joseph Bell, who was a surgeon for the Royal Infirmary of Edinburgh. |
The way that Sherlock describes his older brother is far more fitting of the original Mycroft, who was fat and preferred to lounge around instead of using his skills. |
The televisions that Sherlock uses to train his brain to multitask and accept multiple streams of information are shot with a blue screen. Any images or video gets added digitally. |
As a result of a childhood infection, Aidan Quinn cannot breathe through his left nostril. |