Quirrell

Quirrell now teaching Defense against the dark arts, despite acting nervous and nervous system, or that person are not suspicious of him or he was beginning to crack under the pressure of Voldemort. Either way, their lack of trust it has earned little respect from the students. On Halloween, Quirrell allowed to enter a troll Hogwarts as a diversion and escaped from restricted third floor corridor, where the stone is hidden. Severus Snape, who suspected Quirrell, followed him and was bitten by dogs three fluffy heads in the process.Harry potter hagrid
At the end of the year in a Quidditch match between Gryffindor and Slytherin, Quirrell tried to kill Harry Potter, whom he saw as a threat. He bewitched the broom Harry to try to play with him. However, Severus Snape again interfered with a counter-curse. It was Hermione Granger, who finally stopped Quirrell by the fire inside the cover of Severus Snape, having previously reached Quirrell and causing him to loose concentration in the charming broom (in the movement overthrown the film of personnel resulting after Snape taking fire blanket.
Harry potter hagrid, con el fin de mantener su maestro, comenzó An aprovecharse de los unicornios en el Bosque Prohibido y beber su sangre. To get passed fluffy, Quirrell is disguised and played a card game with Hagrid in exchange for a dragon egg. During that game, managed to learn how to get passed fluffy - Playing music, and he falls asleep. Quirrell then sent a forged letter to Dumbledore to ask the Ministry of Magic for him outside school. He was behind the rock, but was followed by Harry Potter, Ron Weasley and Hermione Granger - although they believe to be your enemy, Severus Snape.Harry potter hagrid
The three students managed to pass many obstacles and finally, Harry Quirrell found in a chamber where the Philosopher's Stone was allegedly kept. However, all that was in the room was the mirror of ERISA, revealed that in fact the exact location of Harry Stone - in his pants' pocket. Quirrell in Harry revealed his master, Lord Voldemort, tied around his head. Voldemort had to imply that Harry Stone, and then fight to enter it, Quirrell could not bear Harry's touch. The magic left for the killing of his mother was powerful enough to burn Quirrell and Voldemort, seeing his servant was no longer any use to him left to die. Dumbledore told Harry that Voldemort left little mercy to his followers as his enemies.Harry potter hagrid