The Austin Yogurt Shop Murders Episode 4

About 8 years after the murders of 4 teenagers in an Austin, Texas yogurt shop the police focus on 4 young men that where teenagers at the time of the murders. What put these guys on the police's radar? One young man had been found in the local mall with a gun a gun in his waistband 8 days after the murders. The teens had been inactivated as suspects earlier but after reviewing the casefiles the police  refocus on the 4 young men, and they start by questioning Mike Scott who will wrongfully confess to a quadriple murder, setting into motion 2 trials and 2 wrongful convictions. And this whole time no one is looking for who really killed Eliza Thomas, Amy Ayers, and Sarah and Jennifer Harbison. Wrongful convictions hurt both the acused and the victims.