"Sir that's Bartemius Crouch Juniour. He used Polyjuice potion and his mother's assistance," Tobi said with his hand raised.

"He was near death so the Dementors allowed his parents to visit. They bought along Polyjuice potion, his mother who was also gravely ill, took a some with some of Crouch juniour in it, and she took on his appearance, and he took some with a bit of her in it, his father lead him out in her place, and no one was the wiser. When his mother died in Azkaban, she was burried bearing his image, and people assumed that Bartimeus Crouch Juniour had died in Azkaban rather than recuperating in his father's home."

And then Tobi realised his mistake. He hit his head repeatedly against his desk. STUPID STUPID STUPID...