Harry Potter was looking forward for the summer to end. The Dursley's were making his life living hell, and a week with Aunt March pushed him over the edge, and he had to escape. When he gets to the Leaky Cauldron will he believe who is there to meet him? Percy Jackson wasn't eager to go back to school. New school same bullies, same work, and same teachers. He finally found something great at camp, but he had to return to the mortal world. That is until Chiron tells his some life shaking news. His family is even more crazy than he ever knew. THIS IS AFTER LIGHTNING THIEF... THIS WOULD BE THE SCHOOL YEAR BETWEEN BOOKS 1 and 2. HE IS 13 YEARS OLD!!!! So this is gonna take place during Harry's third year and between lightning thief and sea of monsters. How will the boys react to finding a long lost twin? Will Percy be able to change the events? Will Ron and Hermione except Percy? Will the weasly twins make to many Percy v Percy related jokes... probably. All will be revealed if you read. This will be based off the Prisoner of Azkaban book, not movie. There will be some sense and lines that are straight form the book, so none of this is mine. All characters, plot and quotes belong to Rick Riordan and JK Rowling. Harry Potter and Percy Jackson twin crossover