Episode 4x11 "The Bone That Blew"
When a skull and various skeletal remains are found in a tree in a nationally protected wooded preserve, Brennan and Booth follow the clues to an ultra-elite private school and a group of rich and powerful families, where lies and deception run rampant. Meanwhile, Brennan’s recently acquitted father (guest star Ryan O’Neal) finds a job as – of all things – a teacher in an all-new episode.
Episode 4x10 "The Passenger in the Oven"
Booth and Brennan are en route to China to identify pre-historic anthropological remains, when a flight attendant (guest star Amy Farrington) discovers a fully cooked human body in the plane’s industrial microwave. They must solve the murder in the air before the plane lands and they lose their jurisdiction over the case. Meanwhile, back in the states, Angela and Roxie’s relationship progresses as Hodgins (TJ Thyne) tries to move on in an all-new BONES.