Although Izzy claims to have never stopped being in love with Paul, she tries to get back into a relationship with Karl. Karl has no interest in Izzy because of his resentment towards her, and the fact that he is trying to get back together with Susan. Karl accepts a ride home from Izzy and once they get to his apartment, she gives him too much sleeping medication. This causes him to believe that Izzy is Susan and he begs her to stay the night. Susan discovers that Izzy is pregnant and when she asks her who the father of her baby is, Izzy denies it is Karl's.