Investigating one of the nation's most prominent unsolved murders, a Hollywood detective pitched softball questions and fed homemade muffins to a serial killer. He asked: Did you kidnap freckled 6-year-old Adam Walsh from a Sears in 1981? "Nothing to do with it,'' Jeffrey Dahmer answered, taking another muffin. The word of Dahmer, a sociopath who stashed severed heads in his refrigerator, was instrumental in Hollywood police deciding he was not Adam's killer despite contradictory statements from two witnesses.