They're all in it to win it -- at any cost!

On Monday's season finale of Bachelor Pad, Vienna Girardi, Kasey Kahl, Michelle Money and their five fellow finalists are facing an uphill battle -- literally! -- when it comes to their final challenge.

VIDEO: A sneak peek of Monday night's Bachelor Pad finale

So who should take home the $250,000 prize? Real-life couple Girardi and Kahl have relied upon their manipulation tactics up until this point, but will their scheming finally backfire?

VIDEO: Kasey serenades Vienna

Money and her partner Graham Bunn clearly work well together. On last week's episode when the contestants competed in "The Nearly-wed Game" answering questions about all the contestants, Money and Bunn outsmarted their competitors. They had a pre-planned number and person designated as their response to every question -- so while their answers didn't make sense, their strategy worked.

PHOTOS: Look back at Bachelor Pad's sexy singles

But Holly Durst and Michael Stagliano have remained fierce competitors, and Ella Nolan and Kirk DeWindt are nowhere near giving up. 

Bachelor Pad's three-hour finale airs Monday at 8 p.m. (EST) on ABC.

Tell Us: Who should win Bachelor Pad?

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