Pamela Shafer

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.

When Team Scorpion and Walter's parents visit Megan in the hospital as her health deteriorates, they are quarantined after a deadly fungus outbreak threatens to infect everyone.

When Team Scorpion travels to Ireland for Megan's one-year memorial, Walter discovers that a nearby lake's natural disaster has created a poisonous cloud that could kill everyone in the village. Also, Cabe and Toby try to alleviate the tension between Tim and Walter.

Tim and Heather plan a surprise birthday party for Samantha, but the night takes an unexpected turn when Samantha doesn’t come home alone. Also, Matt and Colleen are in an awkward situation with their surrogate; John and Joan learn Spanish for their next adventure; and Jen and Greg have to find a way to keep their secret from the family.