She comes to the Olympics having overcome a hellish journey through sexual abuse -- Harrison was molested by her former judo coach Daniel Doyle for four years beginning at age 12 (Doyle was sentenced to 10 years in prison and was banned from USA Judo, the sport's governing body, for life). But Harrison has emerged determined to win, becoming the first female world champion in the sport in 26 years. She'll have a tough run against her biggest competition, current world champion Audrey Tcheuméo of France, but she's determined -- Harrison says that after becoming an Olympic champion, she wants to retire from the sport.