"Only that he and Macnair had access to the spell, whether they have learned it or not, kotenok," he reminded her.  "They are both old families and will have had access to the Grimoire.  I never said either of them was likely to be your killer, though of the pair my money would have been on Macnair.  As it turned out I was wrong on both accounts.  It was not my intention to lead you down the wrong path."  Hermione nodded again, returning her attention to Lucius.