>> we hear foot steps running, "the verdict's in." what? very quick. >> good sign? >> yes, great sign. >> aaron lieu witness was found guilty on all counts and given two life sentences. >> i felt relief, instantly relief that we got him. >> and beverly's family is working to make sure this doesn't happen to someone else's family. they started the beverly carter foundation. her son travels the country training real estate agents about safety. >> it's a blessing for me because i get to not only raise awareness, talk about safety, best practices, but then i also use that as an opportunity for me to kind of slide in some great stories about my mom and so kind of keep her alive. >> that's all for this edition of "dateline extra." i'm tamron hall. thank you for watching.