Just before Duncan 's impending death at the hands of Kell , Connor seems to take control of Duncan 's body , and kills Kell by jumping over him and decapitating him as he turns around .
Just before Duncan 's impending death at the hands of Kell , Connor 's spirit helps give Duncan the strength to continue . 
 Duncan then kills Kell by jumping over him and decapitating him as he turns around .