Revelations - The Darkness 2
This is an intermission before the last chapter of the game. Just follow the doctor until the janitor tells you to follow him. Go to the rooftop and after a brief conversation, you'll have to make a choice whether to stay with Jenny or reject the asylum.
If you chose to stay with Jenny, the credits will roll and you'll have the false ending. Rejecting the asylum will enable you to continue the fight to real, last chapter of the game.