HLN

S10 E12 — Cereal Killer A killer is careless when a home is destroyed by fire and a young boy is missing.

S10 E13 — Crash Course A patrol officer is shocked by the amount of blood at a traffic accident and is shocked by the coroner's ruling until an anonymous phone call re-ignites the case.

S10 E15 — A Leg up on Crime An irrigation canal murder remains unsolved until a similar murder occurs.

S10 E16 — Tight-Fitting Genes The light of day and DNA picture painted by molecular biologist reveals new clues about a nighttime traffic accident.

S10 E17 — Deadly Valentine On Valentine's Day, an obstetrician finds his wife dead and calls 911; police discover inconsistencies between the blood spatter evidence and his version of events.

S10 E18 — Picture This Weed analysis and photogrammetry are used to help solve the 1995 murder of a California teenager is found dead after disappearing from her home.

S10 E19 — Oily in the Morning When police recover the submerged car of a missing man, they find no body; the investigation that follows uncovers a deadly obsession and the motive for murder.

S10 E20 — Gold Rush Emergency dispatch received a call from a man who said his girlfriend shot and killed herself. But the wound was not self-inflicted.

S10 E21 — Four on the Floor Investigators piece together evidence found at the scene of a Native American woman's murder; the tire tracks and shoe impressions could lead them to the killer.

S10 E22 — Writer's Block Experts seek answers to a young businesswoman's death just before she was to testify in a criminal trial.

S10 E23 — A Clean Getaway An anonymous caller reports the rape and murder of a dry cleaner employee; two eyewitnesses tell two similar but not identical stories.

S10 E24 — Prints Among Thieves Police blame a botched robbery when an eccentric elderly millionaire is found dead, but the motive could be wrong.

S10 E25 — Unholy Alliance Woman disappears from grocery store parking lot in Boulder, Colo.; investigators find extraordinary clues in a pair of bloody gloves, unique tire tracks, and ordinary grass and pine needles.

Signed, Sealed & Delivered A car carrying three men pulls up alongside another on an Alaskan highway and fires shots, leaving a passenger dead; one of the passengers in the killer's car agrees to testify against his friends; the resulting trials don't end the carnage.

S10 E27 — Cop Out Police suspect a gay college student's slaying is a hate crime until forensic evidence points the case in another direction.

S10 E28 — Summer Obsession In a wealthy area of Philadelphia, police are called to the scene of what seems like a regular accidental drowning; the investigation begins to focus on one person who has many reasons to want the victim dead.

S10 E30 — Elemental Clue Two women are murdered in the same town and police fear a serial killer is on the loose, further investigation finds that they were both close to the same man.

S10 E31 — Moss, Not Grass A young woman is found dead on a golf course in the Bahamas; the grass on that course is so distinctive that it had evidentiary value; the evidence leads police to two suspects; each blamed the other, and they have to find out who the killer is.

S10 E32 — Material Witness A teenager goes missing after an evening of horseback riding; her body is found a month later, three miles from her home; the killer unknowingly leaves a trace of evidence behind, tiny but unmistakable clues that pointed to him and him alone.

S10 E33 — Garden of Evil When a popular disc jockey is found murdered in a community garden, police swing into action; a sniffer dog and a blood spatter expert led police to the killer, and he'd been much closer than they realized.

S10 E34 — Sunday School Ambush Investigators unravel a twisted tale of lust, greed and deception after a woman claims her husband was gunned down by intruders.

S10 E35 — Penchant for Poison Three seemingly unrelated deaths proved to be serial murders; the killer had been careful, he used poison which had no taste or odour; fortunately for investigators, it also has a unique chemical signature.

S10 E36 — Bump in the Night A man is murdered in his sleep but no fingerprints are anywhere to be found; a shoe impression outside could lead to the killer.

S10 E37 — Sole Searching With very little else to go on, investigators find that a show impression puts them on the right track to finding a killer in Lansing, Mich.

S10 E38 — Murder on the Menu The owner of a restaurant is killed; investigators uncover tales of debt and deceit, but the case remains open, until one detective gets inspired by an earlier episode of "Forensic Files," and looks for clues in an empty holster.

Stories from across the world and conversations with Audie Cornish.

Stories from across the world and conversations with Audie Cornish.

Melanie Zanona; Catherine Lucey; Isaac Arnsdorf.

S14 E01 — Purebread Murder After years of suffering domestic abuse, a young woman is found murdered in her bathtub; among numerous clues, a hamburger bun proves the most incriminating.

S14 E02 — Hear No Evil Evidence that includes threatening emails, a missing person and an abandoned truck lead police to a woman's suspected killer, but they don't have the victim's body.

S14 E03 — Hell's Kitchen A woman has an accidental fall down a flight of stairs and appears to have hit her head, but the lack of blood splatter and misplaced shoes lead police to believe the fall was staged.

S14 E04 — Three's a Crowd A church member gets gunned down after leaving choir practice; although witnesses see little and not much evidence exists, investigators learn that she had been having affairs for years.

S14 E05 — A Squire's Riches When a man perishes in a fire while working in his garage, his death is initially ruled an accident until a forensic odontologist changes the direction of the case.

S14 E06 — Home of the Brave Lack of evidence compels investigators to look beyond the obvious when a woman is beaten to death at her in-laws house.

S14 E07 — Freeze Framed A man is found dead of an apparent suicide. But soon after, information emerges which reveals a much more menacing scenario.

S14 E08 — A Touch of Evil A dismembered body is dumped on the side of the New Jersey Turnpike and before police realize it, bodies are turning up between two states.

S14 E09 — Textbook Murder A young bride-to-be is gunned down in her own home. The attack is personal and as investigators start digging, they uncover the man she loved was living a lie.

S14 E10 — Filtered Out Tara Munsey went missing after a work shift at a Virginia restaurant, and it is unknown if she ran away or if she was the victim of foul play.

S14 E11 — Water Logged An Ohio woman and her two daughters go missing while vacationing in Florida; their corpses are found floating in Tampa Bay with a handwritten note by one of the victims; putting it on five billboards helps them find the killer.

S14 E12 — Social Circle Four young adults are murdered in an affluent Texas neighborhood, with little evidence but two people walking by dressed in black.

S14 E13 — Low Maintenance A young college student is found dead in her apartment and the autopsy rules the death a homicide by an unknown male suspect.

S14 E14 — Fate Date The killer removed the computer that links him to the murder of a woman and her soon-to-be ex-husband that he had met online.

S10 E39 — Hot on the Trail Serial arsonist on the loose leaves no evidence.

S10 E40 — High 'N' Dry A man becomes the prime suspect in his wife's death after forensic science raises questions about her apparent suicide.