After a year of #MeToo outrage and stories about the alleged perpetrators of sexual violence, "Destroyed" focuses on the people charged with protecting the public from sex offenders.

This exclusive reporting reveals that law enforcement agencies nationwide have trashed rape kits before the statutes of limitations expired in hundreds of sex crimes cases. The destruction of this critical evidence, which potentially contained DNA to solve crimes, followed botched investigations.

CNN's Ashley Fantz began digging on this story a few years ago when a police department in Fayetteville, North Carolina, announced it had destroyed more than 330 kits. Nearly 85% of those kits were never DNA-tested.