The thirteenth episode of Idea Channel. In this episode, Mike shows how the unlikely success of a pornographic-fanfiction-turned-novel has roots earlier on in history – specifically, the success of fanfiction that was produced about Sherlock Holmes after Sir Arthur Conan Doyle's famed series came to an end.

You've probably heard of the risque novel "50 Shades of Grey" since it's now the best selling paperback of all time. But you may not know that it's Twilight fan fiction! It seems shocking that a fan fiction novel has become so popular, but 50 Shades isn't the first book to break through the fan community boundaries into mainstream culture.