Sins of the Father, part 1 of 3.ááProfessor X is trying to rebuild memories of his past using other people's minds.ááBut the past is coming back to haunt him in another way, as a swathe of tragic deaths turns out to be linked by only one factor: Brian Xavier, the Professor's long-dead father.ááAnd solving the mystery means paying a visit to the Hellfire Club...