Bottom line is he was nover convicted of anything and the Statute of Limitations has run. That said, in the divorce, he got hammered by the judge and was barred from unsupervied visitation with the children. That says a lot.
He was not married to Mia. They didn't even live together. They had custody battle in court after the affair with Soon-Yi came to light. And as for that judge, I hold him responsible for letting this mess happen to Dylan. He should've just made them send her back to the system. She was better off not being with Mia or Allen for that matter.
