S07 E08 — Terror for Sale
A member of the El Rukn gang agrees to cooperate with law enforcement as part of a plea bargain.

S01 E04 — Freeloaders
A young couple about to be first-time parents, a trio of house guests who have long overstayed their welcome, and a hitman who maybe stole a car, or maybe didn't.

S06 E09 — Deadly Dive
Accident victims may have played a part on their deaths.

S04 E01 — The School Teacher Murder
Kay Baker, a school teacher and mom, is found lying in her neighbor's yard bleeding to death; soon after discovering her body, police spot a wounded man on the run in the woods, leading to a suspenseful chase, arrest, and a possible suspect.

S02 E01 — Forensics on Trial
In fall 1991, Toronto was paralyzed by the story of a missing six-year-old girl found raped and murdered in the boiler room of her apartment building; with four suspects, CSIs turned to the brand-new science of DNA to catch the killer.

S01 E19 — The Reptile Queen
Investigators uncover a bizarre web of lies involving a conman posing as a doctor, Lisa Henning obsessed with reptilian conspiracies-leading to one of New Mexico's strangest and most chilling murder cases.

S01 E20 — Blood Ties
When an affluent couple is brutally murdered, a seemingly random home invasion unravels into a sinister plot of greed, deception, and with Kara Lounsbury shockingly close to the family circle.

NEALY
When Jaime Ivancic suddenly disappears, her family spends months searching for answers; detectives eventually uncover a horrifying chain of events that leads to Shelby Nealy, exposing the murder of Jaime and the subsequent killings of her parents.

S01 E07 — James Duncan
A family man goes missing in a small West Virginian town known for its sweet mountain air.

S04 E03 — The Policeman's Wife
Police officer Brian Fanion frantically called 911 for an ambulance, saying his wife, Amy, had shot herself and lay dying; when Fanion's fellow officers arrived at the house, the crime scene posed more questions than answers.

Edward Delen Warren: The Wilderness Murders
An innocent picnic near a river, a religious retreat and a bizarre plot that spiraled out of control: These are the events surrounding the murder of Charla Toma.

S02 E04 — Cracking the Cartel
When a boy and his mother were abducted by a drug cartel, agents worked in the field to penetrate the secretive drug underworld.

S03 E03 — A Dangerous Mind
After getting fired, a heroin-addicted psychiatric nurse named Denis Czajkowski becomes obsessed with his former supervisor, Maria Jordan, and holds her hostage for 48 hours.

S02 E01 — Lurking in the Hollers
In Townsend, Tenn., investigators suspect that a family feud may have taken a deadly turn when one member of a clan is found murdered and another goes missing.

S01 E07 — Murder at the Mall
In 1979, 18-year-old high school student Michelle Martinko is found stabbed to death in her car in the parking lot of the Westdale Mall in Cedar Rapids, Iowa; for decades, the mystery of her murder has haunted the town and her family.

S01 E09 — The Farmer's Wife
Shirley Carter is found murdered in her farmhouse kitchen, her abusive husband, Bill, is considered a prime suspect; the husband points the finger at their son, Jason; it's left up to the jury to decide who to believe.

S04 E14 — True Crime
Crime writers combine perspectives of law enforcement and journalism.

S04 E15 — Coroner's Casebook
Two of the top coroners in the United States talk about their cases, providing important insights into crime solving.

S05 E01 — Remnant of Blame
The smallest clues may assist in crime-solving.

S06 E07 — Freeman
A real estate agent vanishes after meeting a mysterious buyer; her body is found brutally slain in a rural Texas field.

S07 E05 — Abbotsford Killer
Police in Abbotsford, B.C. hunt a stalker who has left one teen dead and another barely alive.

S02 E07 — Busted on Vacation
Tourists get a little unruly and their beach walks turn into perp walks.

S01 E11 — Mark & Sean Cavaness
Dr. Dale Cavaness is revered in his hometown of Eldorado, Ill., but after his 22-year-old son is slain execution-style, authorities find that the good doctor has some skeletons in the closet.

S08 E07 — The Bully Kills
On her way to a party, Reena Virk's peers swarmed, burnt, and beat her; she was drowned by Kelly Ellard and Warren Glowatski.

S05 E07 — Partners in Crime
Vengeful lovers.