Harry re-appeared with Cedric's body and the Cup portkey in front of the maze and was immediately deafened by the amount of noise the audience was making on thinking that he had won. He breathed a sigh of relief for a second as he had managed to escape Voldemort's clutches again.
As soon as he had appeared, Dumbledore and the Minister had surged towards him wishing to congratulate him but they were shocked on hearing Harry cry, 'Cedric is dead. He is dead. I could not save him.'
Dumbledore rushed forwards and tried to separate Harry from Cedric's body but he was holding on to Cedric's hand in a vise-like grip. Harry instead clutched Dumbledore's hand and said, 'It's Voldemort. He is back. He had Cedric murdered.'
Dumbledore paused in his efforts for a moment and then said, 'I expected him to rise again and we will prepare for him but now Harry, you need to let go of Cedric but I want you to stay with me.'
Harry let go of Cedric's body and was immediately pulled to his feet by Moody who told Dumbledore, 'I will take the lad to the Hospital Wing, Albus.'
'No, I want him to stay.' said Dumbledore.
'Albus, you need to deal with the press and Albus, the Diggorys. They are here. You need to take care of them and comfort them.' said Moody earnestly. Saying this, Moody began to pull Harry away from the maze and the crowd towards the castle.
'Dumbledore wants me to stay, Professor.' said Harry.
'It's alright, laddie. He is just worried after the tragic events of the day. That is all.' said Moody.
Harry allowed himself to be led away. His mind then wandered to all that had happened. His name being entered into the Goblet of Fire, his kidnapping, all that could not have happened without inside help which meant that it had to be a Death Eater. Two names immediately came to the fore of his mind, Karkaroff or Snape or both. He immediately turned to the Professor.
'Sir, where's Karkaroff? Voldemort surely had inside help in getting me through all this and Karkaroff was a Death Eater. He should be questioned about this, shouldn't he?' asked Harry.
'Karkaroff?' asked Moody with a snort, 'He ran away, probably when he felt Voldemort's call through his Dark Mark. He was cowardly to return to his Master having betrayed many of the Death Eaters by naming names. If he returned, he would be killed.'
That left Harry thinking about Snape. Dumbledore had made it clear that Snape was on their side during their last meeting. 'if Snape was on Voldemort's side, wouldn't he have come on Voldemort pressing the Dark Mark?' thought Harry. Snape loathed him and his father. He would surely have loved to see his Master kill him, if he was still a Death Eater.
This meant that there was someone else, either under the Imperius Curse or under Polyjuice Potion. Finding who is under the Imperius Curse would be hard and as far as Poly juice was concerned, hadn't Hermione said that the effects of Polyjuice Potion would run out after an hour which meant that the Polyjuiced person would have to drink the potion every hour in order to keep up the disguise. Surely, someone would notice a person drinking something every hour. This thought gave him pause and he suddenly realised with a sense of foreboding that there was one such person and he was willingly walking with him away from the protection of Dumbledore!
He was in no position to run away. He would have to handle this carefully and not let the impostor know that he was onto him.
He started forming a plan to take him down as the castle loomed close. He had a very clever Death Eater to take down.