Kelly Connolly
December 08, 2015 AT 05:53 PM EST

Saddle up, squints: Bones is about to roll into the wild, wild West.

In part one of Thursday’s two-part midseason finale, Brennan (Emily Deschanel) and Booth (David Boreanaz) go undercover at an Old West-style shooting competition. What’s their game plan? 

“Being unexpected and exciting! And solving a murder, of course.”

When Brennan surprises her husband by joining him in the field, the pair dust off their old aliases — with a frontier-style twist — and introduce themselves as quick draw Wildcard Wanda and notorious highwayman Big River Buck. But do their fellow saloon-goers have something to hide? Check out the clip above to see what sparks the partners’ interest.

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Bones’ two-hour fall finale, “The Cowboy in the Contest/The Doom in the Boom,” airs Thursday at 8 p.m. ET on Fox. 

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