A former West Point cadet vanishes without a trace

<p>Maura Murray's disappearance 17 years ago has left investigators and her family confused and dumbfounded. She was a former West Point cadet with dreams of becoming a nurse. Then one day after exhibiting strange behavior, she vanished.</p> <p>Jack Murphy talks with her sister, Julie Murray, about one of the first disappearances of the social media age to capture the attention of the public. <br /> <br /> What happened to Maura Murray?</p>