Carmen, a social worker, and Toni, an account executive, are wives from Ann Arbor, Michigan; after helping so many others, now might be their turn for a massive payout -- if they have what it takes to brave the wall.

Andrea, a fire captain, and Terry, a recruiter, are husband and wife from California; Andrea was the first female firefighter and the first female fire captain for the city of Upland; they hope to break even more records while up against the wall.