Tuesday

Forensic entomology: Bugs have roamed the earth for 250 million years, but their intimate association with death is just now coming to life. The kinds of insects on bodies, along with their stage of development, can pinpoint time of death and help identify victims.

A criminal who kills a police officer wages war on society. In 1987 such a criminal vanished after shooting two Boston officers, one fatally. He had a history of violence against cops and the protection of a group of outlaws.

When a vicious attack leads to the death of a young parent and child, investigators are stumped. Years later, they arrest the gunman surprisingly close to home – but a change in the law puts the case in jeopardy.

Dr. G works on unexplained deaths in orange and osceola counties in florida, as well as similar deaths from her previous employment as an associate medical examiner in bexar county, texas. The show features dramatic re-enactments of the events leading up to the person's death as well as the autopsies. Interviews with dr. G, family members, and other people connected to the deaths are also shown.

A former state trooper claims his wife died by suicide. But detectives uncover a bitter divorce, odd behavior, and bodycam footage that lead them to question if this was murder staged as tragedy.

After Heidi Firkus is shot during an alleged home invasion, detectives question the only other witness. Years later, they use digital reconstructions, trajectory tests and 911 audio to see if the story of a mysterious intruder makes sense.

Law student Adrienne Hickson fatally stabs her boyfriend Shawn Washington with the knife for her birthday cake when he helps his friends move instead of spending the day with her.

Applebee's waitress Rachel Wade, 19, stabs 18-year-old Sarah Ludemann to death in a vicious teen-girl cat fight over shared bad boy boyfriend Josh Camacho.

When popular pizza restaurateur Robert Baron Sr. vanishes from his business in Old Forge, Pennsylvania, detectives discover evidence of a violent attack. With no body and few answers, the investigation becomes one of the region’s most enduring mysteries before a breakthrough years later finally sheds light on his fate.

Dr. Dale Cavaness is revered in his hometown of Eldorado, Illinois, but when his 22-year-old son is slain execution-style, authorities find that the good doctor has some skeletons in the closet. Dr. Dale has had not one, but two sons die by gun shot at the same age. Is this coincidence, or is there a sinister force intent on killing off the Cavaness sons?

Shayna Hubers called 911 to report she had killed her boyfriend in self-defense after he attacked her. But investigators soon learned he was planning a date with a beauty queen the night he died. Did Shayna kill him in a jealous rage? A stunning interrogation room confession and emotional testimony left the jury with a tough decision.

The brutally beaten body of First Nations sex trade worker Pamela George is discovered on a cold spring morning just outside Regina, Saskatchewan. Initial investigators focus on men known as Ôbad tricksÕ, but three weeks later, new information changes the direction of the investigation. Popular university students Steven Kummerfield and Alexander Ternowetsky, white boys from successful families, are charged with first-degree murder in the death of Ms. George. They are ultimately convicted of manslaughter in a sensational case that divides the public along racial lines.

When a young college student is abducted from a friend’s home in the middle of the night, the city of Reno lives in fear of who might be next. Dogged investigation leads detectives to a serial rapist who’s just escalated to murder.