Front Game Rules
Two married couples competed. Each couple was brought out separately, and they decided which mate would be the one to enter the isolation chamber. When that decision was made, host Peck asked the unsecluded mate three either/or questions. After these questions were answered, the isolated mate was then grilled. For each question, the isolated mate answered negatively to both choices, and a "galvanic skin response" mechanism (a lie detector in layman's terms) output a reading as to his/her nerves when answering no. If the first mate's predictions matched the readings, they won $100 for the first question, $200 for the second and $400 for the third.
After both couples got a chance to play, the couple with the most money got a choice: either take $500 and call it a day, or play one final question for a grand prize. Whichever choice the winning team did not pick was given to the losing team.