Rob and Mary Beth McNally

Rob and Mary Beth McNally are the contestants on season 4 of the U.S. version of the special couples edition of Who Wants To Be A Millionaire? on May 17, 2001. They walked away with $500,000.

Sources:

 * Rob and Mary Beth's Run to the Million (Part 1)
 * Rob and Mary Beth's Run to the Million (Part 2)