48 HOURS MYSTERY "JUSTICE IN THE HEARTLAND," SATURDAY, AUG. 14, 2010 -- 48 HOURS MYSTERY "THE SECRET," SATURDAY, AUG 14

NOTE: 48 HOURS MYSTERY WILL BE BROADCAST SATURDAYS AT 9 PM AND 10 PM AUG. 14-SEPT. 4

A LOVING FATHER'S MYSTERIOUS DISAPPEARANCE HAUNTS A SMALL TOWN WITH A SECRET...WAS IT MURDER?

ON 48 HOURS MYSTERY "JUSTICE IN THE HEARTLAND," SATURDAY, AUG. 14, 2010 (9:00-10:00 PM, ET/PT)

In May 2005, Michael Golub left work to pick up his young son, Mikey, at the home of his ex-girlfriend Shannon and was never seen again. The 27-year-old's disappearance mystified the residents of his hometown, Johnson City, Kan.-a small community of 1,400 people, where everyone knows each other-and each other's business.

According to Golub's friends, the former couple had split because Shannon had became increasingly frustrated that Golub didn't earn enough money and they fought frequently. Even their son Mikey, the one bright spot in their relationship, was not enough to keep them together. Both quickly moved on and by 2004, had established new lives with other partners. Golub had another son with his new girlfriend, Brooke, and Shannon married Chad Floyd, whose family is one of the richest and most powerful in Johnson. But Shannon and Golub were still at odds, especially in matters involving young Mikey.

Shannon claimed Golub never showed up at her house on the day he vanished. But authorities became suspicious when she and Chad began making plans to move out of Johnson. Their suspicions grew when they discovered that just days before Golub vanished, Chad cashed in on $50,000 in family stock-which authorities allege he was going to claim he had paid Michael to give up custody of his son and disappear.

Michael's family says he would never have given up his son for any price, and there is no doubt in their mind that he was murdered. Yet one piece of important evidence has always been missing-Michael Golub's body. Now, two private investigators examine the evidence and uncover what they think happened to him on that summer evening.

WHEN A 911 OPERATOR VANISHES INTO THIN AIR HER DEADLY SECRET IS EXPOSED ON 48 HOURS MYSTERY "THE SECRET," SATURDAY, AUG 14, 2010 (10:00-11:00 PM, ET/PT)

When Theresa Parker unexpectedly disappeared in March 2007, the small town of LaFayette, Georgia, was shocked. So beloved was the 911 dispatcher that hundreds of people came out to search nearly 175 square miles of land for her.

Theresa, who loved helping others, was adored by family and friends including her police officer husband, Sam Parker. The couple, who married in 1993, seemed a perfect match. But after 13 years of marriage the two decided to split and Theresa found her own place. One night after visiting her sister, Theresa left to go home, but was never heard from again.

Police found her car at the couple's home, but there was no sign of Theresa and no obvious signs of foul play. Investigators' extensive search of the heavy terrain around the home would not turn up a body, but as they turned their focus to her husband Sam, the probe would soon expose his dark side and Theresa's deadly secret.