Plot

A paint-ball team accidentally finds in a national park the consumed corpse of a woman, soon identified from dental records as the wife of protestant minister Joseph Serrano. She was declared missing six months ago, then returned with serious amnesia treated by eccentric specialist psychiatrist Dr. David Yarzick, and again recently. Further forensics on corpse and grave reveal traces of water-resistant burial and repeated forms of abuse and different times. Sweets also tries to counsel Booth and Bones as they bicker over the correct impact of their pregnancy on living arrangements and couple dynamics.—KGF Vissers

When the Jeffersonian team identifies the remains of a woman found in a paintball field, they discover two missing-persons reports in her file. Booth and Sweets interrogate the victim's husband and learn that she suffered from amnesia. When squint Wendell Bray learns that the victim also survived a bullet wound, inconsistencies in her medical records uncover a surprising crime linked to her murder. Meanwhile, Brennan and Booth adjust to their new life as an expectant couple and deal with the forthcoming changes in their home life.—Fox Publicity

A group of very overzealous young men are playing paintball. One gets RIDDLED with paint bullets and falls backward into a pile of human remains. He SCREAMS for help only to be ridden with bullets once again. And, again, he falls into the decaying body.

CUT to Booth (David Boreanaz) and Bones (Emily Deschanel), who are playing house in Booth's tiny apartment. Bones is quite pregnant -- and aware. "You look great," Booth says before making out with his partner. "It's been five months and we spend most of our time together. What we need is one bed. One place." The cute pair suddenly gets on the subject of marriage. It sounds like it's certainly a possibility. The conversation is interrupted by a phone call. Time to investigate the dead body on the paintball course. Bones identifies the body as a female. Hodgins (T.J. Thyne) puts the time of death -- judging by the bugs, -- at seven days. Bones suddenly begins to cry. She explains it's only due to a hormonal imbalance and has nothing to do with the dead body. "This is definitely murder," Bones sobs. It's funny.

Back at the Jeffersonian, Wendell (Michael Grant Terry) and Camille (Tamara Taylor) examine the body. The victim was stabbed through the brain. Camille removes the brain -- and discovers it's crawling with beetles. Naturally, this makes Hodgins quite excited as it could identify the murder weapon. Sweets (John Francis Daley), in the meantime, asks Booth if the pregnancy has put pressure on his relationship with Bones. Naturally, Booth tells the shrink everything is "fine." Later, Hodgins reports he has found evidence of linseed oil at the "grave" site. The beetles, meanwhile, indicate the residue from anxiety medicine. Interesting.

Bones then pulls aside Angela (Michaela Conlin) and admits she is worried Booth is upset because she is not ready to move in together. "I've always been on my own," Bones says. Angela, a new mother, politely informs her friend she will never be on her own again once the baby is born. "I'm with Booth on this one," Angela says. The team then gets news: the female victim was reported missing twice in the past few months. Booth and Sweets then interview the woman's husband, Joseph (Brad Greenquist), who appears devastated by his wife's death. Joseph explains. He is a pastor and his whole congregation has been praying for the woman's return. Turns out the first time the woman went missing, she returned with memory loss. "Her amnesia caused her to establish a new identity," says Sweets, who explains to Booth it is a common survival mechanism.

Later, Booth and Bones eat breakfast. Bones says the couple should move in together -- at her place because she is more financially sound and generally more responsible. She is very cold in explaining she will be the one making the decision. "We're family -- even you should know what that means, Bones," says an angry Booth. Bones is taken aback. Just then, Sweets interrupts with news: the victim was being treated by Dr. David Yarzick (Martin Grey), known for unorthodox methods. The good doctor also got "bounced from Vegas" for counting cards. Sweets and Booth visit Yarzick.

Yarzick explains he treated the victim and her memory was just beginning to return. He then mentions a fellow patient had become very, very attached to the victim. "Sounds like a stalker to me," Booth says. Back at the Jeffersonian, Bones is clearly upset, but she continues to work. Camille observes it must have been horrible for the victim to have her life erased from her memory before dying. "Perhaps it was a good thing," Bones tells Camille. "She had the opportunity to start fresh, create a better life." Bones might as well be talking about herself -- and she and Camille know it.

Booth and Sweets then interview the "stalker," Trevor (Jamison Yang). Trevor plays the violin as he talks about his beloved, claiming the victim was afraid of her husband. Booth then spots linseed oil in Trevor's violin case. Back at the Jeffersonian, Angela has brought in her baby to see daddy Hodgins -- against Camille's rules. Hodgins then explains the linseed oil in the grave does not match the linseed oil in Trevor's case. In fact, fibers at the scene suggest the gravesite previously held a canvas bag that had been waterproofed with the oil. "So someone dug up a bag before burying her," Camille says. She then asks the new parents to keep the messy baby out of the lab.

CUT to a park, where Bones apologizes to Booth, but claims she is only being rational. Booth points out having a kid together isn't rational, but "here we are." Bones takes her baby daddy's point. Later, Booth discovers from police reports the victim had previously accused Pastor Joseph of assault. Wendell then discovers the victim ALSO had a bullet fragment lodged in her body. The fragment would have been easily removed by a doctor, but wasn't. Somebody wanted to remove the bullet and keep it quiet. CUT to Booth, who re-interviews Pastor Joseph. Joseph denies ever having abused his wife. He also denies having an affair with a woman named Karen who was apparently present each time the police were called to investigate calls of domestic abuse.

Later, Angela notes just because Bones grew up on foster care doesn't mean she needs to be afraid of committing to family life. Bones denies she was even thinking such thoughts, but she doth protest too much. Angela then uses the bullet fragment to discover it was shot from particular gun. This gun, Booth explains, was fired during a home invasion months ago. Is it possible the victim, while suffering from amnesia, attempted to rob a home? "She could've adopted the persona of a criminal if she was with one at the time, "Yarzick later explains. He says the victim didn't mention any of this during therapy -- or at least he doesn't remember such a strange story.

Back at the Jeffersonian, Hodgins has identified a possible murder weapon, a field spade with a saw blade on its handle. Perfect for killing the victim, then digging her grave. Booth, in the meantime, visits a man at a halfway house arrested for the home invasion in which the victim was shot. He admits to knowing the victim -- not by her given name Claire, but as Brenda. Booth then explains Claire/Brenda was found at a nearby park -- and the robber curses softly. He had hid a canvas bag of his loot from various crimes in that park. "There was almost 80 grand in there," the man admits.

Later, Booth gets a call from Bones, who has become stuck in a storage room after falling over. Booth rushes to save his baby mama and then apologizes to Bones for pushing her into sharing a place together. "I want our kid to know I'm not my dad," Booth admits. "I want him to know that I gave him a real home -- our home." Bones agrees. She volunteers to find a new place to live with Booth -- "even though it's a foolish investment." They make out in the store room. The kiss is interrupted when Bones has a eureka moment. Nobody has looked carefully for evidence under the paint splatters. She blames the oversight on her overactive hormones. Booth, a smart guy, doesn't argue.

Sweets then goes through Yarzick's notes on the victim and notices strange notations in the margins. Booth recognizes them as codes for gambling. A check of the good doctor's bank accounts reveals, well, nothing. The doc has a major gambling problem and could've been after money he learned of from his patient. CUT to Wendell, Hodgins and Bones, who examine the paint splatters. Bones focuses on one splatter and notices chewing gum with a clear impression of a tooth. "That's as good as a fingerprint," Bones says. And, sure enough, that tooth impression matches Yarzick's. Sweets is especially upset. "She trusted her life to you," the young doc seethes. "You betrayed her."

So Yarzick is arrested. Case closed. The episode ends with Booth and Bones reclining in bed and looking for houses on the Internet. They banter like an old non-married couple.