House and the team treat a ballerina whose lungs collapse during a performance; House is desperate to find a cure for his insomnia.
Meg suffers a personal loss and heads out on a pilgrimage to Miracle; after a fallout with Laurie, Tom seeks to reunite with Meg.
The CSIs experience eerie occurrences when they find a female who appears to have been, literally, scared to death, then the case takes an odder turn when Mac discovers a second victim.
Hiro focuses on saving the lives of others; Angela tries to help Nathan remember his past; Tracy tries to get her old job back.