Clark and Brennan continue to argue about who gets the bones. Things get heated and Cam has to come in and break them up. Cam tells them Clark can keep the bones in his office and Brennan can have access to them. They both are still not satisfied.
In the FBI Conference Room, Sweets talks to Wayne Wilson. Wayne Wilson admits that he is a religious man but he did not kill Sutton. Wayne admits he bought the artifacts from Sutton. Sweets realizes that Sutton's artifacts contradicted Wilson's beliefs and when he found out Sutton had found something in Chechnya he wanted it. Wilson tells Sweets that he wants a lawyer.
Angela shows the sketches she made of the people they found to Clark. Clark tells Angela that the measurements for the child are too small. He realizes that the child is half Neanderthal. Clark is excited.
Cam tells Brennan to stay focused on the current case and to not get wrapped up in the Neanderthal case. Cam tells Brennan that the particulates in the victim's rib were from an animal. Brennan determines that with the injuries the victim has about two months ago Sutton was flogged.
Hodgins bring in a whip tool called a knout to show Cam. Hodgins tells her that Sutton was flogged by leather, which was made from a republic in Russia. Cam shows Hodgins some of the tissue from the victim's back that has scarring where the flogging took place. Hodgins is surprised the victim survived a beating like this.
Back at the FBI, Sweets talks to Marina Sutton again. Sweets asks what she knows about the flogging. She tells him that her family is traditional and didn't want her to marry a foreigner. Her father had Sutton whipped and she and James came to America to get away.
Brennan takes in Clark's diorama. Brennan examines the inter-species family and is amazed at what they have found. Brennan drops her competition with Clark.
Brennan goes to the Bone Room with Cam. Brennan shows Cam marks that on the bones she thought were from predators but in reality were caused by a weapon. The two theorize that the victim was attacked from behind causing the injuries to the scapula. Then the victim turns to face his attacker and is struck slicing his axillary artery. The victim died of exsanguination. They found cause of death together!
Booth questions Marina's brother, Artur, who trained with the Russian army. Booth pulls out Artur's bank account, which was broke until a few weeks ago when he received a big deposit from a Russian bank account. Booth thinks Artur was paid to kill his sister's wife but Artur isn't talking.
Hodgins tells Brennan that he found a linen that was fused with polyurethane but wasn't from the victim's clothes. It was actually book binding. Brennan is confused on how a book could cut a major artery. Hodgins tells Brennan the murder weapon is something covered in book binder's linen but is sharper than a book. Brennan realizes she knows what killed Sutton.
Booth and Brennan return to publisher Diana Malkin's house. Brennan notes that Diana has a big range of books including How To Commit The Perfect Murder. Brennan uses her ALS light and finds blood on the floor. Diana denies everything. Booth notices that she is missing a heavy elephant shaped bookend. Booth pulls up a picture of Diana with both of the bookends. Brennan says that the bookend could be a match. Diana tells Booth that Sutton betrayed her when he called on his trip-he wanted to be taken more seriously and didn't want to work with her anymore. Booth cuffs her.
Back at the lab, the team gathers around Clark's diorama. Hodgins, Cam, and Sweets re-enact the Neaderthal family. Clark explains that this family was outcasts because of who they were. An intruder comes in and attacks the father, the mother tries to defend him but she gets hit in the head, and their daughter starved to death since she was an outcast and no one wanted her. Before they all died the family crawled to each other to die together.
Back at Booth and Brennan's house, Booth is proud that Brennan let Clark take the reigns with the diorama. Brennan tells Booth that Sutton will be credited with the findings so he will become a legitimate anthropologist. Booth and Brennan agree to try not to push their failings onto Christine. Booth doesn't believe he has any failings.