After nine weeks of competitive dancing spanning a variety of styles from the Cha Cha to the Foxtrot to the Viennese Waltz and beyond, Amy Purdy & Derek Hough, Meryl Davis & Maksim Chmerkovskiy, Candace Cameron Bure & Mark Ballas, and James Maslow & Peta Murgatroyd remain in the competition, but only one couple will be crowned "Dancing With The Stars" champion. These four remaining couples will have one last opportunity to impress the judges and the viewers.