Becky Wahlstrom

Booth and Brennan investigate the scene where a car was run off the road and the victim's body deliberately burned beyond recognition. When the team hears muffled whimpering during the site investigation, they find the victim's baby miraculously perched in a tree above the scene of the crash. The team designates Brennan as the infant's caretaker, but when the baby swallows a key piece of evidence, they question her nurturing skills. The team soon identifies the victim as a laborer who worked in a tire-recycling factory in a small, impoverished town in Virginia, and Brennan and Booth venture out to investigate who might have wanted her dead. Their suspicions range from her deadbeat husband to the impecunious habitants of her town. Meanwhile, the team is fascinated by the presence of a baby in the lab and its affinity for Brennan.

Addison takes temporary leave from Seattle Grace and makes a road trip to Los Angeles in order to visit some old friends from medical school. As Meredith continues to bond with her stepmother, Susan, Cristina reluctantly plans her wedding with the assistance of her mother, Helen, and Burke's mother, Mama Jane. Meanwhile, Derek must perform emergency surgery on Ava/Jane Doe, as Alex continues his unfailing bedside manner with her.

Addison gets a job offer away from Seattle Grace; Burke continues to have reservations about marrying Cristina; Susan returns to the hospital after feeling ill following the surgery.

The search into the disappearance of a Marine Lieutenant continues as the NCIS team tracks them down to Afghanistan. Meanwhile, Tony's deepest fear resurfaces and Gibbs has to go through memories of his past again.

Piper, emotionally distraught over the loss of Prue, is lured in the violent life of a Fury. Paige and Phoebe must work together to save their sister.