i m gonna leave the house and the phone rings. you could see the area where heidi was. i was lost for words just doesn t make sense. a vibrant young woman stalked by killer. i cringe every time i think about it found dead by her boyfriend my brother was just a mess. he was devastated. the most ominous clue, u on the wall to the left of you heidi s body was, was a number one. she s number one and get ready because here comes trouble exactly it was not a break-in the windows, the door, nothing was broken did the killer have a? keith the question always was, how did the person ge into the house a decade later, in a stat 1500 miles away, detective finally found their answer got a dna hit. and more questions. we knew there was more of the story than just some guy come in colorado to meet a murder and go back home again. did someone closer to hom want her dad you are 99% sure he had something to do with it. but, there s no smoking gun. so many secret
the off line database i get this phone call from trooper, he tells me, i ve got alexander bennett, somebod running a want to check on him on march 30th of 2000. a maryland officer? i was like, holy cow. three weeks before heidi murder, an officer had spotted alexander bennett walking down a baltimore highway. when i want to check is run by patrolling or officer, that check remains in the compute forever. how important was that? incredibly important. detectives mayer and child law wanted to get on a fligh to denver. it was time to meet this alexander bennett. coming up a suspect story, a surprise to even at these experience t tech gives that s why , it is strange. when dateline continues when dateline continues feel the cla and make y
what s yours? yeah. double harebrained. reporter: alexander bennett was sent to prison and required to give dna. now, years later, that dna was tying him to heidi s murder back east in maryland. for baltimore prosecutors garrett glennon and matt breault, the dna was an enticing lead but far from definitive proof. it was enough to say it looks like it came from him, you know? but we can t say it s definitively his. so there was more investigation to do. reporter: so, the detectives went to work, looking for another connection between colorado native alexander bennett and the maryland murder. all the usual computer searches failed, but when sergeant meyer had the maryland state police mine an offline database. i get this phone call from the trooper and he tells me. he said, i got alexander bennett somebody running a wanted check on him march 30th of 2000. a maryland officer. in maryland.