know? >> no witnesses, no leads, really no clues at all. just her empty flip flops in a deserted parking lot. >> this was not a runaway. something bad had happened. >> her family had faith somehow, some day brooke would come back home. >> maybe someone has her captive and they will decide just to let her go. >> months later, more than 1,000 miles away, a college student is rescued, running from a kidnapper. >> she said he's got a knife, he is trying to kill me. >> could this lead to brooke coming home? >> this isn't the first time he's done this. >> they couldn't imagine what it would take to find the answer. >> i want to know where she is. >> bringing brooke home. thanks for joining us. i'm ann curry. when the young woman at the heart of this story disappeared, her family knew right away that