okay, here's an idea. how about the girl is close to suicide, so you start talking her out of it. you call the suicide hotline, you dial the wrong number for some reason, as if some force willed you to do it. the number you actually dial is Dr. Kevorkian!

after she talks to Dr. Kevorkian for a while, not realizing it's the wrong number, she realizes that Dr. Kevorkian is her real father! she was only adopted by her current parents. so her real father on the phone tries to talk her out of commiting suicide, simply so that he can recruit her to become one of his hotline death-dealers. He then tries to get you too, and tells you that you and the girl are twin brother and sister!

You both resist, and hang up the phone after you realize what's going on. Then you go on a quest to bring your father back from his wicked ways, and turn him on the path of helping others to live, instead of die!!!

DO IT!