S4·E23 The Girl in the Mask

Episode recap

In season four, episode twenty-three of Bones, titled The Girl in the Mask, Booth receives a call from his detective friend from Tokyo, Ken Nakamura. Ken contacts Booth because his sister, Sachi, has gone missing while visiting Washington, District of Columbia. Following this call, Booth and Brennan investigate the disappearance of Sachi. The television series, which is a police procedural drama created by Hart Hanson for the Fox network, features the collaboration between an FBI agent and a forensic anthropologist who team up to investigate crimes that have left scant evidence behind, specifically focusing on cases involving human remains. The broader professional team working at the Jeffersonian Medico-Legal Lab assists Special Agent Seeley Booth, who is played by David Boreanaz, alongside the forensic anthropologist Dr. Temperance Bones Brennan, who is portrayed by Emily Deschanel. The series also stars Michaela Conlin and TJ Thyne.