识骨寻踪 (4.13): The Hero in the Hold | 识骨寻踪 Spoilers | Tv Zine 

Booth is kidnapped 由 the Grave Digger and the Jeffersonian team must find and save him before it's too late. Meanwhile, when evidence from the Grave Digger's case goes missing, Brennan and Hodgins are suspected of taking it.
密码: 识骨寻踪, booth, brennan, seeley, boreanaz, deschanel, emily, season 4