I'm surprised this doesn't have a thread yet, but this is one of the more disturbing crimes I've ever heard of:
http://www.usatoday.com/news/world/2008-04-28-austria-captive_N.htmAMSTETTEN, Austria (AP) — The children locked in the basement never saw the light of day.
A retired electrician has confessed to imprisoning his daughter for 24 years and fathering seven children with her in a windowless cell sealed by an electronic keyless-entry system, police said Monday...
His daughter Elisabeth, now 42, was 18 when she was imprisoned in the cell constructed deep beneath the family's apartment in the building, said Franz Polzer, head of the Lower Austrian Bureau of Criminal Affairs.
"He admitted that he locked his daughter ... in the cellar, that he repeatedly had sex with her, and that he is the father of her seven children," Polzer told The Associated Press.
According to police, Elisabeth said she gave birth to twins in 1996 but one died several days later.
Police said the surviving children are three boys and three girls, the youngest of whom is 5. The oldest child is 19. DNA tests were expected to determine whether Fritzl is the father of the children, as he claims.
Investigators said they were trying to determine how the victims could have been hidden away for so long from other families in the building and everyone else in the town of 23,000 people.
Fritzl "managed to deceive everyone," including his wife, Rosemarie, who apparently was unaware of the existence of the children in the cellar, Polzer said.