In December, 1994, 13-year-old Wendy Gardner convinced James Evans, her 15-year-old lover, to strangle her grandmother to death. Then she took her own little sister prisoner, stole her grandmother's money, and began a three-day orgy of sex and junk food. From the heinous crime itself to the sensational trial, here is the graphic and shocking account of one of the most bizarre killings ever committed in the state of New York. Photos.