A dancer's medical issue leaves House killing her to save her, by taking images of her heart. The hallucination of Amber leaves House doubting his own sanity enough to bring Wilson, and then Cuddy, into the fold. Cameron reveals to Chase that she doubts herself, and what she may do in the future, by wanting to keep her dead hubby's sperm incase their relationship fails. This drives Cameron into sitting in on House's team's final differential finally, for once.
A beautiful dancer has a hidden heart apsis from developing Gonorrhea. She got the STD from a mysterious tryst, outside of her relationship with a fellow dancer. This indiscretion led to her situation where she developed an extremely rare adverse reaction to the antibiotics that House prescribed for her initially. The severe reaction shed most of her skin. House's team was able to remove the apsis, but were devoid of House, to come up with a crazy method to reanimate the dancer's hands and feet, on their own.
House brought Wilson into the fold when Foreman coerced him to come back to work. Most of the episode was filled with House trying to cheat and deny his Vicodin hallucination of Amber. When he was faced with electro shock therapy as his only other option to rehab with Vicodin withdrawal, he went to Cuddy to ask for help. I think it was clear at the end he was driving himself to do whatever the hallucination of Amber seemed so adamant against. That singular purpose helped Cuddy see him through the worse of the withdrawal. For once, House said: "Thank you" to Cuddy for caring about, and helping him personally. I feel that was the first time I ever heard House say Thank you to anyone devoid of any sarcasm. The singularity of that moment lead to them actually kissing outside of some dream, or hallucination sequence; And, removing each other's cloths. I think that maybe it is about time House and Cuddy released their inner rabbits on each other. After 5 years, the sexual tension between them was getting a little old; And, I was actually hoping for something new, so I am very happy with this episode. I look forward to watching the rest of the season, and House finding some happiness with Cuddy.