S08 E03 — The Russians Are Killing
Iouri Mikhel masterminds a kidnapping-for-ransom scheme, and kills four people whom he dumps in a northern California lake.

S08 E04 — A Way With Murder
A confession from a psychopath Robert Spangler as he reveals his role as a serial spousal killer.

S08 E05 — The Killer Schoolboys
Pamela George's beaten body was found and two boys from successful families are charged with first degree murder.

S04 E01 — Railcar Killer
In the summer of 1999, serial killer Angel Reséndiz Ramírez terrorized railroad communities before finally surrendering to police.

S01 E26 — Ivan Milat: The Backpacker Killer
When the bodies of seven backpackers are found 93 miles from Sydney, Australia, police mount an intensive search for the killer.

S06 E03 — The BTK Strangler
In 1974, a man identifying himself as the BTK Strangler starts a two-decade killing spree in Kansas that leaves 10 dead.

The Teenage Terrors
School rumors and wiretaps lead police to three teenagers guilty of the murder of a local DJ and security guard with a fondness for helping wayward youths.

S06 E04 — The Menthol Murderer
Police are misled by false confessions and stories of secret meth labs in their quest to find the killer of a 10-year-old Indiana girl.

S06 E07 — The Woodchipper Wife Killer
Helle Crafts went missing after a snowstorm, resulting in a conviction that shocks a community.

S02 E18 — Hangry Woman
Police arrests a woman for alleged assault; she reportedly bites, kicks and spits at officers.

S02 E19 — Bizarre Bank Heist
New Mexico police arrest a lone criminal, reminiscent of Clyde.

S02 E20 — Florida Karen
A search of a woman's vehicle reveals multiple knives and two empty alcohol bottles.

S01 E09 — A Mother's Love
A mother suspects that her daughter was poisoned; a skull fracture threatens an infant's adoption.

S01 E10 — Ashes to Ashes
Identifying badly burned bodies; a man mysteriously dies on a bus.

S01 E15 — Lynn Ann
Lynn Ann Jackenheimer goes on a Fourth of July vacation with her two young children and her boyfriend to the Outer Banks of North Carolina, hoping for some quality family time after a rough period in her life.

Each episode investigates a real murder that took place in an exotic locale, while the victim should have been enjoying the trip of a lifetime.

S04 E05 — Deadly Dealings
People who contract killings have airtight alibis, but investigators use forensic science to explode so-called perfect alibis.

S04 E06 — Body Count
As cocky serial killers become increasingly careless, investigators harvest the clues that will ultimately put them away.

S06 E05 — Botello -- Valadez
A weekend getaway turns into a nightmare when 23-year-old Marisela Botello vanishes after a night out in Dallas; as months pass, a web of deception unravels secrets buried, a body hidden and those responsible fleeing across the world.

S07 E03 — Shopping Spree Murders
Phoenix police are faced with a unique serial killer team who get their thrills stalking and shooting innocent people at night.

S02 E05 — Cops Behaving Badly
Sometimes law enforcement personnel behave the same way as the people they arrest.

S01 E09 — Marlon Keith Smith
Keith is known as a quiet but highly skilled artisan who takes good care of his mother, but after she becomes mysteriously ill, and he is not heard from for three weeks, his girlfriend Betty comes under suspicion.

S08 E06 — The Kid With the Hollywood Haircut
In 1951 a hitchhiker is sentenced to hang for murder; public outcry reduces his sentence.

S04 E09 — A Taste of Poison
Poisoners rely on their victims' trust.