>> a case blown apart when a secret relationship revealed. >> i don't get a chance to explain it? >> you are not controlling this anymore. >> exposing hidden bombshell evidence. >> he's on the property where a woman is murdered and we don't know who he is. >> everyone on social media was like, that's the guy that did it. >> who was in prison, the real killer or the wrong man? >> we still have a murderer out there. >> you never know how something's gonna go. hello, and welcome to "dateline. " michelle mockbee met the love of her life, dan at the warehouse where they both worked worked. they married, had two kaurs and were busy juggling jobs and family. then a day that began like any other suddenly turned deadly. a security camera quickly led police to a suspect. just when michelle's loved ones thought justice had been served a