It was before the second task of the Triwizard competition that I noticed Mad Eye Moody turn into someone else. I freaked out but there was nothing I could do at the time because the task was about to start and I was about to jump and breath underwater for a while. Days after, I started to keep an eye out for Mad Eye Moody. I started being very suspicious of him. Every move he did I followed. You may think I'm weird or crazy but I could feel that something was wrong that Moody wasn't being himself. I even started digging on his past to see if there was any curious fact about him I considered I should know about. I started to think that I was insane that maybe I didn't even see anything. Maybe I was overwhelmed in the situation with the task about to start that maybe I imagined it all. That would be an easy way out of this mess but I don't trust this person. I'm going to find out what he is doing and what he is hiding. I thought of suspicious things he did and then it hit me. Why did he always drink this beverage that seemed to taste horrible? One night I sneaked into his office and took his drink to then find out that it was Polyjuice potion. I knew for a fact that he was changing into someone else and not for a good cause so I decided to wait. I followed him one day and saw him change into Barty Crouch Jr! I continued to follow him and I saw him talking to Peter Pettigrew contriving their plans for something they called "The Return." They discussed how they planed to take Harry Potter to a graveyard where Pettigrew would take Harry's blood in order to restore Voldemort's body and power. That is basically how I knew all about who put Harry in the competition, all about why and all about the portkey. I did not have a chance to tell Harry about these plans so I decided to win the competition and be prepared for Voldemort and his supporters when they would try to kill me..