ellen lopez explains how hard it is to keep female celebrities and women around the country safe from their stalkers >> reporter: taylor swift arguably the biggest pop star in world, not safe from repeated stalking two hours after this man left a court accused of doing just that, stalking the super star, he was right back in front of her home again, leading to his third arrest in five days, even after the court ordered him to stay away from swift david crowe has been to swift's home more than 30 times in just the past two months according to court documents. swift also targeted at homes in california and rhode island of she's one of countless female celebrities dealing with obsessive stalkers and the corrective shrug they can get from law enforcement >> oftentimes it's just scape i gots, oh, they're overreacting >> reporter: they can get up to seven years in prison for the most serious offenses. but a doj study found only 12% of all stalking cases result in criminal prosecutions. >> in a city size of new york you're not going to be held in jail pending a charge for a misdemeanor of th