As an exotic dancer at Hott 22 in Union, Linda Kay's persona was that of a dark and ghoulish Goth girl. In real life, police say, her interest in the macabre was more than just an act. Officers responding to a report of a suicidal individual at Kay's South Plainfield home discovered a severed hand in a glass mason jar of formaldehyde and six skulls -- all human, according to the Middlesex County medical examiner. Kay, 31, was arrested and charged with improper disposition of human remains. She has so far refused to tell police where or how she obtained...