>> he needs to be held to account, more than that he needs to be punished. and it's my job to do that. >> for ken allen, the weinberger case felt personal. this was his backyard. and though he may not look like a working class hero in his tailored suits, ken allen says his father was a steel worker, like many of weinberger's former patients. in fact, allen says he worked in the mills himself as a teenager. that's him behind the wedding mask. >> a lot of my colleagues as lawyers somehow think they morph into something different once they get a law degree and all of that. and i know who i am. i knew where i came from, and i don't forget that. >> though hard to prove, ken allen believes his lawsuit on behalf of phyllis barnes and her subsequent death are what caused mark weinberger to flee. >> weinberger realized at that juncture that his gig was up. he knew, having killed someone,