Once when I was a little girl I had an imaginary friend, we saved a whale in outer space and went to sea and fought pirates and I fell in love with a man who waited two thousand years for me and I gave hope to the greatest painter in the world and then I died Well not really I actually faked my death with the help of a consulting detective. Fluffy sherlolly! Doctor who / sherlock

Young Lucy wants to know the story of Sherlock Holmes' one and only love.