Tuesday

Robert Sims returned home after working the night shift, and found his wife, Paula, unconscious on the kitchen floor. Their two-year-old son, Randy, was asleep in an upstairs bedroom, but their six-week-old daughter, Heather, was missing. Paula Sims was the only witness to a crime that baffles investigators to this very day.

The day began like any other for Cheryl and Paul Chapman, until the silence of a peaceful Sunday morning was shattered with a phone call.

It should have been Shangri-La, but when bad blood developed, piracy took over and the only law was the law of the jungle.

When a murder is committed and deceit clouds the evidence, investigators turn to science and technology to uncover the truth and expose a murderous lie and capture the killer.

Missouri v. Joseph Elledge. An exchange student found a career and a love match in the idyllic Missouri university town of Columbia. It was a shock to their friends and family when she disappeared, leaving both her child and cell phone behind. The missing persons case made headlines as police divers painstakingly searched a nearby river without success. But then a discovery - hikers stumbled on the remains of a corpse in the woods, and forensic experts confirmed it was Mengqi. The “no body” case was now officially a murder case with strong forensic evidence matching dirt on the killer’s boots to the dirt at her gravesite.

Sometimes law enforcement personnel behave the same way as the people they arrest.

Dr. G takes us through the most surprising results of some shocking autopsies.

A union official was executed in his home not long after a strike by the union membership. Neither his wife, who was sleeping in the adjacent bedroom, nor anyone in the neighborhood heard any gunshots. It would take a forensic sound test, an electron microscope, and a nightgown to explain why.

A man tells police he shot an intruder who had attacked and murdered his wife. The husband paints a tragic picture of harassment, stalking and revenge, and is dubbed a hero for his valiant attempt to save his wife. Four years later, new forensic evidence leads police to re-examine the motives of this so-called “hero.”

A man accused of killing his estranged wife insisted she had committed suicide. Investigators said it was murder – that it was physically impossible for the woman to have shot herself. The crime scene evidence was interpreted differently by the defense and prosecution. It was up to the jury to decide if the woman killed herself or was the victim of a cold-blooded murder.

Firefighters find an entire family dead inside their burned-out home, and at first glance, it appears to be a case of murder-suicide. But clues found at the scene soon lead investigators to believe otherwise.

Millionaire frank black boards a commercial flight and disappears into thin air. The workaholic, busing magnate is never seen or heard from again. Authorities believe alan mackerley, blacks’ former business associate is the man behind the murder. But black’s body and the murder weapon are never recovered. At trial the defense raises doubts that black is even dead at all!! With no body and no murder weapon they argue the case is highly circumstantial.

When mother of two Shaundra Murr is run over in front of her house, officers initially suspect a hit and run. Until Lt. Joe Kenda uncovers evidence proving Shaundra’s murder was a crime of passion, and the killer was driven by jealousy and rage.

In the 1980s, the United States faced a deadly new enemy abroad, an expanding network of terrorists targeting American interests. Hundreds of innocent people were killed in bombings, executions, and hijackings.

Just hours before her divorce hearing, Atlanta socialite Lita McClinton opens her front door for a flower delivery. The deliveryman, a small time hood named Tony Harwood, hands her a box of roses and then shoots her dead. Detective Welcome Harris - and most of AtlantaÕs elite - suspect LitaÕs estranged husband, millionaire Jim Sullivan, of orchestrating the murder. After a 19 year investigation, one guilty hit-manÕs confession and an international manhunt, Sullivan is finally found guilty of her contract killing.

In rural Kentucky, a young woman is found dead in the trunk of her car. The search for her killer unearths a deadly web of buried secrets in this seemingly idyllic community.

Beautiful cheerleader Kathleen becomes the victim of a sick and twisted high school stalker, who had a crush on her that turned into a dangerous obsession.