Bones: Season 5, Episode 15

5 - 15: The Bones on a Blue Line

While Dr. Sweets is on a subway train, a stranger tells him he has just been cured of leukemia, then the train is thrown off its tracks as a water main breaks, causing havoc inside the train leading to death of the man who had just been cured of cancer. The accident exposes a skeleton that was caused by the flooding, leading Booth and Brennan to investigate. With the release of Brennan's fourth book, a reporter (Seiko Matsuda) interviews her for a Japanese magazine. Sweets deals with the near-death experience feeling it was a message to live his life fully, leading him to propose to his girlfriend Daisy