Bones: Season 4, Episode 12

4 - 12: Double Trouble in the Panhandle

The team investigates the death of female conjoined twins who were in the process of deciding to get separated or not. The twins were working in a circus, which means that Booth will come face to face with a clown during the investigation. Brennan and Booth go undercover as Wanda and Buck Moosejaw, Canadian performers in a knife-throwing act. Sweets helps Brennan and Booth understand Circus lingo.