The Girl in the Mask

Booth's detective friend from Tokyo, Ken Nakamura, calls him when his sister, Sachi, goes missing while in Washington, D.C. With Brennan, Booth investigates her disappearance and soon find a canal in which they discover Sachi's decapitated head. Ken arrives in Washington and Booth and Brennan work with him to retrace his sister's final moments to find her killer.