A body is found on an abutment high up on a parking garage, where it's been decomposing for the last week or so. Missing bits of skull and smeared blood point to murder rather than suicide; the discovery of a bullet hole at the base of the skull clinches it. Bird droppings - which are very corrosive - have eaten away the bones, and Hodgins must find a way to remove the guano before the bones are completely destroyed.
Further evidence leads Booth to suspect a contract killer. Screws in the bones from a fracture lead to medical records that allow them to ID the victim as Troy Carter, whose brother reported him missing last week.
Troy was a superstar mini-golfer.... a sport that turns out to be unexpectedly competitive. Suspects include his brother, a former mini-golf champion who was his biggest rival, a flirtatious 18-year-old mini-golfer and her super-protective father, and a mini-golf course manager and his wife.
Meanwhile, when Brennan's father Max breaks a promise to take care of Christine because he's going out of town for a few days , but won't say why , Brennan is worried that he's reverting to his criminal tendencies, and enlists Booth's help to keep an eye on him. And "squintern" Wendell Bray enlists Hodgins to help him fix his girlfriend's family heirloom after he accidentally breaks it and can't afford to get it repaired professionally.
