CRIME: Percy Lead No. 273

One morning in the midst of his successful 1966 bid for a seat in the U.S. Senate, Illinois' Charles H. Percy was awakened by his wife's screams. He set off the piercing burglar alarm atop their 17-room mansion in Kenilworth, a suburb of Chicago. When he entered the bedroom of his 21-year-old twin daughter Valerie, the girl lay agonizingly near death—her face, chest and stomach mutilated by stab wounds. In the seven years since the slaying, Illinois state police have interviewed more than 14,000 people, spent over $300,000, and painstakingly pursued 1,317 leads. Last week the...

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