Sherlock holmes tv series with girl as lead?

I'm looking for the name of the tv series, quite recent, of sherlock holmes, where the main character is a girl who is supposed to be the grand daughter of the famous detective, and she has the same sort of mysteries to solve. it was on bbc 2 a few years ago i think.
Update: IT WAS A GODDAMN TV SERIES! NOT WHAT I THINK, OR A MISTAKE I MADE. IT TWAS CREATED BY TV EXECS!!! I WANT TO KNOW!!! JEEZ, IT'S LIKE TALKING TO MONKEYS
Update 2: BTW, she is a schoolgirl, so around that sort of age- 16ish i think.
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