Brennan and Booth investigate the site of a train wreck where the bodies of a senator and a high-profile businessman are found within the wreckage. The businessman's body is found in a car on the train tracks, and at first look, it is an apparent suicide. While investigating a possible connection between the two victims, Brennan and her team discover the businessman is still alive, but severely injured, at a local hospital, and the body at the scene is someone else. As the clues begin to unravel
Booth and Brennan investigate the remains of a woman and unborn baby washed up on the beach of the Delaware Bay. The body is identified as that of Carlie Richardson, a pregnant newly-wed whose mysterious disappearance one year ago had been a major national news story. However, the immediate prime suspect, Richardson's husband, has also disappeared. Meanwhile, Booth is annoyed his ex-girlfriend Rebecca, the mother of his son Parker, is letting Parker spend so much time with her new boyfriend.
Brennan and her team dig through the trash to find clues when a young man wrapped in a shroud is found among garbage. After Angela is able to identify the deceased boy, Cam quickly assumes the main suspect to be the boy's girlfriend, Kelly, who is a product of the foster system. Brennan is hurt by this as she is also a product of the foster system. Meanwhile, things get tense when Brennan and Cam struggle for power in their disagreement on work styles. Cam threatens to fire Brennan, but backs do
Skeletal remains of a young girl are found, and when brought back to the lab, the team recognizes this is not just any murder but Howard Epps, who the team encountered in the first season, a convicted serial killer on death row. He left clues leading to another body, a fresh kill only a week old. Brennan and her team scramble to decipher Epps' cryptic clues as they try in a desperate effort to find his accomplice who has been killing for Epps. When they realize another victim may be alive, the t
Gruesome remains of a man dissolving in a bathtub of corrosive chemicals are found in a construction site. In a search of the man's identity, they realize he was living a double life with two different families. In what first appears to be a straightforward case of jealousy and insurance money, new clues send Brennan and Booth in a completely different direction and a third suspect is brought to light. Meanwhile, Brennan, curious, confronts Rebecca about her recent antics with Booth and her reje
Brennan and Booth are called to the site of an explosion in a Miami hotel where several people were either injured or killed, including an unidentified body found burned, thought to be the bomber. Initially, the explosion is thought to be the work of a Colombian drug cartel intending to target Judge Dolores Ramos, the Colombian judicial representative, who survived the blast. Diplomatic immunity and State Department official Alex Radziwill stand in way of Brennan and Booth's investigation as the
Brennan and Booth investigate the death of Brianna Swanson, a young beauty queen whose decomposed remains are discovered at a water filtration plant. Brianna's father is the initial suspect, but new clues lead elsewhere. Brennan and Booth investigate Brianna's dance school, where they find new information leading to several suspects. Meanwhile, Hodgins works up the nerve to ask Angela out on a date. At first, she rejects due to their situation as co-workers but after seeking advice from Brennan
The team head to the outskirts of Las Vegas to investigate the murder of a missing federal prosecutor and a related murder of a female boxer. While questioning a suspect at a casino, Booth finds himself face to face with his old addiction: gambling. He and Bones go undercover as a couple to infiltrate an underground fight circuit to find out who or what got the victims killed.
The team investigate the murder of two kidnapped teenage twin boys. The boys were placed in a spaceship-like capsule and buried alive underground. Soon, Brennan and Hodgins find themselves victims of the "Grave Digger", and Booth frantically searches for them as they slowly run out of oxygen underground. The case as broadcast has no conclusion (it was solved in the season 4 episode "The Hero in the Hold"). The Fox Network website initially displayed a summary for the episode which included an or
Brennan and Booth investigate when a headless corpse is found in the woods along with a frightening video tape of events on the night of the murder. Meanwhile, Hodgins and Angela are assigned to find any possible information on the video, much to Hodgins' glee, as Angela grasps his arm out of fear of what she sees. The episode's plot is a slight parody of the famous found-footage horror film, The Blair Witch Project, with even the famous antagonist (the Blair Witch) of the film, presented as a l
Zack defends his dissertation to obtain his doctorate and asks help from a colleague. Meanwhile, Booth and Brennan are called to the scene where a man's body was found gutted, burned and hung like a scarecrow on the roof of a hotel that housed Federal witnesses. Booth determines the victim was a snitch working in an organized crime syndicate. Brennan's brother, Russ, informs her of a phone call he received from their father, warning him they are both in danger. Soon after, a priest contacts Bren
Booth and Brennan are ordered to the cell of serial killer Howard Epps to identify the remains of an inmate. To their surprise, the charred remains don't belong to Epps. It's soon learned Epps has escaped and is on a revenge path, which involves Booth's young son, Parker. Due to the danger of the case, Brennan must get FBI protection. Cam inhales a toxin while performing an autopsy, which puts her life in danger.
When Booth is ordered to go see a psychiatrist (guest star Stephen Fry) after irrationally discharging his firearm (at the clown on the top of an ice cream truck), Brennan is paired up with Agent Tim Sullivan to investigate the apparent murder of a college student in the Everglades, and by the time the case is solved Sullivan and Brennan express their mutual interest in each other.
When a benefactor of the Jeffersonian is found murdered, it's up to the team to find out who, but Hodgins' past with the widow complicates matters. Meanwhile Booth continues to see the therapist (guest star Stephen Fry), and Brennan is progressing in her exploratory relationship with Sullivan.
Three separate bodies are found murdered exactly the way Brennan wrote them in her new book. However, the killer's method was different every time, leading the team to believe that it was not one but three killers. Booth and Sully become concerned for Brennan, while she insists she can take care of herself. This increases tension between Sully and Brennan, straining their relationship. Booth tries to help them along, apparently fine with the couple. At the end of the episode, Sully and Brennan r
During Brennan's vacation, a woman's body is found with its bones removed. The team interviews people who knew the woman, but they all seemed to be hiding something. Meanwhile Sully tells Brennan he bought a boat and will be leaving for a year, at the end of the case, to tour the Caribbean; he asks Brennan to take a year-long sabbatical and go with him. At the end of the episode Sully sails off in his new boat, "Temperance", while Brennan waves good-bye, as she has decided not to go.
Brennan and Zack examine corpses, which have been spilled out of their coffins, due to a burst water main in an old cemetery on the St. Agatha church grounds. However, as they identify the individual bodies to be put back in their proper place, they find one skeleton that is out of place. Father Donlan, who runs the church, says all these bodies had been buried for at least 50 years and yet Brennan believes one of them was buried five years ago with no coffin. When it is confirmed the deceased w
The remains of a body are discovered encased in concrete, and Booth has a hunch the victim is connected to an organized-crime boss. When Booth suspects a dead, former hit man (Hugh Kennedy) is apparently alive, he contacts the bounty hunter who found what was left of his remains (a severed leg). When Booth travels to Baltimore to find the hit man, he gets knocked unconscious and tied up by Kennedy himself, but Kennedy soon flees, leaving Booth relatively unhurt whilst still restrained. Meanwhile
The team investigates the death of an astronaut who appears to have fallen to Earth from a high altitude. While Brennan and Booth question his associates at the Space Agency, Hodgins theorizes about a conspiracy involving extraterrestrials. Hodgins asks Angela to marry him but she refuses, asking him to keep trying.
Brennan and Booth are called by Homeland Security to investigate the scene at an old stone house where some glowing bones have been found. Fearing the remains might be radioactive, the pair don protective hazmat suits and cautiously enter the house, where they find the glowing bones but no radioactivity. Back at the Jeffersonian, the team examines the bones and determines the identity of the victim, but there is no immediate explanation as to why the remains are emitting a green glow. With each
The team works on finding how Chelsea Cole, a fan of astronomy who suffered from Werner syndrome, died. Meanwhile, Hodgins and Angela prepare for their wedding. Zack is asked to serve his country in Iraq. Brennan's father, Max, tries to let her in on her past and brings her a 1993 video of her mother. Booth and Max get into a fist fight before Max surrenders to his arrest. The investigation leads to the victim's mother as the killer who admits guilt, confessing that she killed her disabled daugh
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