Episode Name: The Finger in the Nest
Episode Overview: Parker, Booth's son, discovers a corpse's finger in a bird's nest, causing the team to launch an investigation to try to find the rest of the body. After finding the corpse, the team discovers that the death was caused by a dog, leading them to an illegal dog fighting ring and a search for the killer dog and its owner.
Episode Number: 4
Episode Season: 4
Episode First Aired: 2008-09-17