Sherlock has always believed that there is no one out there who can deduct as good as he can. But what if there was someone out there who could deduct just as, if not better, than the great Sherlock Holmes. Well there is. Her name is Cassandra Winters and she has lived in america all of her life. She has wanted nothing more than to get out of America where there is nothing but petty thief cases. So when the opportunity to go to London arrives, she nearly jumps at it. While there she meets and goes head to head with Sherlock, only she doesn't know who he is. She thinks that he is just an arrogant detective looking for attention.