. >> reporter: for the first time, peyton lightner is talking about that day five years ago, three 12ds at a slumber party, and the next morning, a walk into the woods to play hide-and-seek. do you remember leaving the park to go to the woods? >> they just wanted to go on a walk, and i didn't think much of it. it's just a walk. what bad stuff happens in walk shaw, wisconsin? >> reporter: peyton was stabbed 19 times and left for dead by her own friends who later blamed the fictional character slender man. >> when i was five feet away, i said now, go ballistic, go crazy. stab, stab, stab. >> the suspect lured the victim into the woods. all three of the girls are 12 years old. >> who ever heard of 12 year old girls planning for six months to kill one of their best friends. >> through the whole time, peyton was screaming in agony. >> i didn't want to do this. i was pafraid what would happen if i didn't. >> reporter: it's friday night, in wisconsin, a milwaukee suburb. peyton is et goigetting ready t celebrate her best friend's birthday at that slumber party. >> she was so, so, excited. >>

peyton lightner was 12 years old when she was stabbed 19 times by team classmates.e just in case. >> to this day. >> just makes me feel safer. >> do you think that will ever go away? >> i hope so but for now i don't think so. pete: peyton ambushed in 2014 while playing hide-and-seek. they say they attacked her to please the online. they were sentenced to 30 and 45 years in a mental institution. detroit airport letting people go through security without a ticket. officials hoping will t. will encourage shopping and allow people to spend more time with loved ones. former deputy secretary of transportation oliver mcgehee raised concerns earlier. >> we really do have to be visionary and village length. that's really what you are describing and making sure that airports are safe and secure in the post 9/11 era. there is some concern in this particular airport. pete: detroit. the tsa says guests must register and still go through a security training. tampa and pittsburgh airports have similar rules. and a group of terrorists gets the absolute shock of a lifetime. did i sa