Tales of the Missing Marauder

We all know the story of the four, mischievous boys who once ran the halls of Hogwarts long before Harry and his friends came along. Remus, Peter, Sirius and James otherwise known as The Marauders spend their days pulling pranks and getting into any kind of trouble that comes their way. But what if there was another, someone that was forgotten. Who was this mysterious fifth Marauder and why were they erased from the minds of so many? The only way to find out is to look into the minds of those who meant most to them and discover the tales of the missing Marauder.