London, Hogwarts and the rest of the Potterverse is rocked when a twenty year old man is transported to their world by way of a mysterious purple energy. Who is Chris Johnson? Why is he here? And will his arrival change the course of history, for better or worse?

Harry and his friends return to Hogwarts to find new friends, old friends, incompetent professors and madness aplenty. But there is something dark at Hogwarts Collegium of the Arcane Arts. And it's targeting Hybrids and 1st Generation Magi. Sequel to Ripple Effect: Stone of Immortality.

SLIGHT AU TO RIPPLE EFFECT! After an incident with Frank, the Golden Quartet get sent back in time to 1970! A whole year before the Nefari arrive! How will they survive it? Will they avoid any and all paradoxes? Why does this kind of thing always happen to Harry? READ ON AND FIND OUT!

When Harry Potter enrolled at Hogwarts Collegium of the Arcane Arts, he didn't realise he would be rooming with a Nefari/Human Hybrid, learning how to fly and saving the world. A mysterious object is being kept at Hogwarts, and someone in the school is trying to steal it. It's up to Harry, Frank, Ron, Susan and Heidi to stop them and save both worlds. Don't Let 8 Chapters Stop You!

After a time-traveler goes back to insert a vision into the dreams of Albus Dumbledore, a Ripple Effect larger then any other drastically alters the course of Human History. We follow Harry and his friends as they try to survive their Hogwarts years with an crazy dueling instructor, an ancient alchemist and a race of alien cat people coming along for the ride. Full Summary inside!

Harold Prowell is an inventor. When he and his friends uses their inventing skills to try and cross the threshold between worlds, they is surprised at where Harold turns up...