This week, the remaining five contestants are surprised by a visit from Dallas Cowboys quarterback Tony Romo, who gives them an inspiring pep talk before taking the players on a hike. They also get a visit from season seven winner Helen Phillips and season three winner Erik Chopin, who talk to them about the challenges and strategies for keeping the weight off once they leave the ranch. A health update with Dr. Huizenga reveals startling visuals of how their bodies look now --inside and out - compared to when they first arrived at the ranch. Then the contestants face what could be their toughest challenge yet - putting all of their weight back on and racing up and down sixteen hills of sand while dropping their weekly weight loss incrementally as it was lost during the season. Later, the final five see just how far they?ve really come watching emotional videos of each of their weight-loss journeys at the ranch with trainers Bob Harper and Jillian Michaels. Then the five players weigh in, but this time, a red line will determine this season?s final four, so whoever has the lowest percentage of weight loss will automatically go home. Alison Sweeney hosts the series.