From https://en.wikipedia.org/wiki/Joseph_Bell: "The BBC television series Murder Rooms: The Dark Beginnings of Sherlock Holmes was a fictionalized account of Doyle's time as Bell's clerk. The series may have exaggerated Bell's criminal investigations as well as the degree to which Holmes was based on Bell (played by Ian Richardson), and it positioned Doyle in the role of a Dr. Watson to Bell's Holmes. The original one-off production, which led to the later series, was released on DVD and VHS in the US in 2003, titled Dr. Bell and Mr. Doyle – The Dark Beginnings of Sherlock Holmes."
It goes on to list other works inspired by Bell, including a comic book.