Plot hole: Angela comes into the autopsy room to inform Hodgins and Cam that Brennan is awake. Cam says that Brennan said the entry wound was cold and Hodgins comes up with the ice bullet theory. But how did Cam know what Brennan said about the cold if she didn't already know Brennan was awake?
Trivia: When Max and Temperence go out to lunch with Temperence's cousin Margaret, Max comments that the pair are "practically sisters," and later when Margaret meets Booth, Booth asks if she is Bones' sister. The actress playing Margaret is actually Emily Deschanel's sister, Zooey.
Question: When Doctor Brennan is examining the victim's skull, she states that a "straight suture across the palatine bone" indicates that the victim was a native Japanese speaker. I've studied linguistics, but I've never heard of a person's native language actually affecting their anatomy. So, for example: would a person of Japanese heritage who was born and raised in the US and spoke only English be distinguishable from a person who grew up in Japan and spoke only Japanese, purely by their palatine bones? (00:06:10)