'Bones' season 11 spoilers: Bones and Booth to go undercover in Wild West in midseason finale

Bones and Booth don cowboy costumes for their undercover roles in the midseason finale of Bones season 11. fox.com/bones

Prepare to see Brennan (Emily Deschanel) and Booth (David Boreanaz) in the two-hour midseason finale of "Bones" season 11.

After a brief hiatus, the long-running crime procedural comedy-drama will return to feature a big fall finale.

In the upcoming episode, the husband-and-wife team will once again go undercover to investigate a bloody murder at an Old West-themed shooting competition. Complete with cowboy costumes and thick Western accent, Brennan and Booth will have to disguise themselves as Wanda and Buck to catch the killer.

However, things turn dangerous when Bones and Booth's undercover characters are challenged in a Western-style shooting duel.

The two-hour fall finale, titled "The Cowboy in the Contest" and "The Doom in the Boom," will also reveal that Angela (Michaela Conlin) and Hodgins (T.J. Thynes) will also contemplate about the fate of their family. The other couple in the Jeffersonian lab will face another bump in their relationship, but can they survive it this time?

Cam (Tamara Taylor) will have to make a big decision in the second half of the episode, because she has to deal with the return of Arastoo (Pej Vahdat) since she already met a new guy named Sebastian Kohl ( guest star Gil Darnell).

A portion of the official synopsis of the two-episode midseason finale reads:

"The team investigates the murder of a police officer that sends shockwaves through both the Jeffersonian and FBI teams. Behavioral analyst Leslie Green (guest star Sara Rue) is assigned to work with Booth on the investigation and lends her professional assessments on who the cop killer could be, while Cam must make some decisions in her personal life and the entire team re-evaluates what is truly important to them."

"Bones" season 11 two-hour fall finale will air on Thursday, Dec. 10, on FOX.

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