When John was about five years old, Old Nick attacked and killed Jack in a drunken rage. He was sentenced to prison but later escaped. The day he returned home Mouse vanished. It is unknown whether Old Nick killed her. On John's eighth birthday, Old Nick, having decided that Gaunt was actually Jack's son, attacked John with a broken bottle. This caused the distinctive vertical scar that Gaunt carried through his life. Old Nick fell in the fireplace and burned to death