Potterlock is a crossover between Sherlock and Harry Potter.

In this Au it has the characters of Sherlock attending Hogwarts/Teaching at Hogwarts.

Usually in this Au:

-Greg is either a Hufflepuff or a Gryffindor.

-Mycroft is a Slytherin, but sometimes he is a Ravenclaw.

- They usually meet on the train to Hogwarts, or in their 5th-7th year.

-Greg is either a year above Mycroft or the in same year.

-Greg plays Quidditch

-Mycroft is head boy

All credit to the original artist!