Although he discovered that his best friend was a murderer, Mandell said he stayed at the party for a few more hours.
“If you were in my shoes, and that guy was your best friend, you wouldn't want [to] leave right away,” Mandell said. “I know how heinous and sick this is, you know, what he did. But, you ... wouldn't have ran away, because you're comfortable with this guy. You don't see him as a killer.”
Mandell even took a selfie with Hadley, because, he said “I knew it was going to be the last time I ever [saw] him.” But even while posing for that picture he knew what he had to do. He left the party in the early hours of the morning and called Crime Stoppers to tell them Hadley killed his parents.
“You know, I didn't have any hesitation whatsoever for calling the cops,” Mandell said. “The … worst feeling had to have been realizing ...that his parents are gone.”
At a sentencing hearing in March Hadley, now 20, broke his silence but offered little insight into why he killed his parents.
"Not a single day goes by that I don't think about my parents or my whole family that I've affected by this,” Hadley said. “I just want everyone to know that I am ... truly sorry for, you know, the acts I committed.“
Tyler Hadley was sentenced to two life sentences without the possibility of parole for the murders of his parents.
“It makes me realize ... you never really know anyone,” Mandell said.
“And since this, you know, I have trust issues. And I feel like I'll probably, you know, never fully trust any new stranger that I meet again.”