>> in 2003 a stranger attacked her in her suburban memphis, tennessee home. was just 16 years old. >> you're sitting there 16 years old, they're saying are you sure you were raped? how strange was it? >> it was confusing, just confusing. >> was there a moment you felt it didn't really happen to you >> no no no. >> a threat by her attacker to return and kill her if she cooperated by police, evos decided to undergo an exam to prepare a rape kit. these kits are an important tool in prosecuting sex crimes. the body of a rape victim is a crime scene, fluids, hairs and skin left behind by an attacker can be tested for dna leading to the attacker's identification. >> he came up from behind me knocked me down and then covered my face. there was no way i could identify him so the only chance i had was the dna that they were able to collect from my body. >> evos assumed her kit would be analyzed quickly. instead it sat on a shelf in a police evidence room for nine years. >> fast forward now to an update from memphis where megan's case is part of a 12,000 kit backlog. b