Derek Hough Reveals Amy Purdy's Secret Weapon for 'Dancing with the Stars'

Derek Hough can't say enough about his "remarkable" partner Amy Purdy on this season's "Dancing with the Stars." In fact, the five-time champ, 28, told ABC News the double amputee champion snowboarder is one of the reasons he decided to come back for season 18. "They told me about her and I said, "I have to dance with her, I have to do this. I'm too inspired," he told ABC. "We are just going to continue to defy the odds." After scoring 24s through the first two weeks, Hough and Purdy have a secr...