Mr. Crouch's son. As a young man Barty Crouch got involved with the Death Eaters. This tarnished his father's reputation, especially since Barty Crouch was allegedly involved in torturing Frank Longbottom and his wife with the Cruciatus Curse, attacks that Dumbledore tells Harry shocked the Wizarding world. Mr. Crouch sent him to Azkaban, though he did give his terrified son a trial. Harry witnesses the trial when he finds himself in Dumbledore's Pensieve and thinks that Barty Crouch is a victim of Voldemort and the mayhem that Voldemort spreads. Most people believe that Barty Crouch died a year after being imprisoned in Azkaban. However, in the aftermath of the third task, Harry and Dumbledore learn that Barty Crouch didn't die: he and his mother traded places and he spent the next thirteen years living in Mr. Crouch's home, under an Invisibility Cloak and under the influence of the Imperius Curse. Bertha Jorkins was the only person who suspected that Barty was still alive, but Mr. Crouch modified her memory when she confronted him about it--and when Jorkins ended up in Voldemort's vicinity, he broke through the Memory Charm and was able to discover Barty. After this, Voldemort and Barty Crouch devised a plan for Barty to use the Polyjuice Potion to impersonate the Auror Mad-Eye Moody and teach at Hogwarts. He spends his year guiding Harry so that he'll win the Tournament and only reveals himself after the third task. He tells Harry several times that what he hates most is Death Eaters who walked free, and under the influence of Veritaserum, he shares that what he truly wants is for those Death Eaters who went free to be punished by Voldemort. Fudge brings a dementor to administer the Dementor's Kiss to Barty Crouch, thereby making him a useless witness.