MC is definitely Jessica's father right? I mean all the clues are there. Molly would tie him up and blindfold him during sex. Anna was having trouble getting pregnant called Jessica a miracle baby (making her desperate enough to sneak fuck MC) and as Jessica became a beautiful teenage girl Anna was desperate to get MC out of the house so he wouldn't fuck her (granted that could be normal protective mother but if she knew he was her dad it would also make sense). In the flashbacks they say that Jessica didn't inherit anything from Lewis. There is too much hinting at it for it to be coincidence