House and the team take on the case of a ballerina (guest star Jamie Tisdale) whose lungs collapse in the middle of a performance. When the treatment causes her skin to fall off, the dancer faces not only the prospect of never dancing again but also of dying an agonizing death. The team must use their imaginations to carefully choreograph ways to test and treat her delicate body without killing her. Meanwhile, House continues to suffer from a severe lack of sleep and is still haunted by Amber (guest star Anne Dudek). While enlisting Wilson’s help to diagnose himself, he is willing to do the unthinkable to make his visions stop.