When Superboy goes back to Cadmus to find out more about his creation (Along with a few other YJ members) they find out that Cadmus did not end with Level 52. There was a Level 53. (I will not spoil what happens so that is the best description I can offer you. Please enjoy my 2nd fan fiction!)

The Adventures of Sherlock Holmes is a collection of twelve stories written by Arthur Conan Doyle featuring his famous detective.