On April 23, 2016, car salesman Hufracio Arteaga is found stabbed to death in his Michigan City, Ind., office; with no witnesses, investigators use surveillance cameras from an adjacent building to find out who murdered Arteaga.

Twelve-year-old Alajawan Brown is gunned down outside a 7-Eleven in Skyway, Wash., which is only a block away from an earlier shooting; only CCTV can help piece together the puzzle pieces and find Alajawan's killer.

Twenty-four-year-old father-to-be Nathan Trapuzzano is shot dead while taking his morning walk; security footage from the scene shows the final shocking moments of Trapuzzano's life, but it may not be enough to help police hunt down his killer.

On March 18, 2011, 32-year-old Patty Ayala is murdered at the Burger King where she works; police find the safe open and a mysterious message next to Patty's body, and then examine the surveillance video.

Thirty-six-year-old Carl Starke is shot dead in cold blood near his home in St. Augustine, Fla.; while there are no witnesses, neighbors hear shots; armed with a likely time of death, police turn to CCTV to help hunt down Starke's killer.

In Madison, Wis., Andrew Nesbitt is found murdered on his 46th birthday; with no witnesses, investigators turn to surveillance cameras in bars and taxi cabs and on street corners to track down his killer.

On Dec. 2, 2014, Rhonda Daugherty vanishes; detectives turn to the public for information on her mysterious disappearance, and a tip leads investigators to surveillance footage from a hotel where they uncover a journey of duplicity and deception.

Murdered in his office, Dr. David Cornbleet's daughter finds him bound and gagged in a pool of blood, and police must rely on closed-circuit television images of an unidentified man to lead them to Cornbleet's killer.

Seventeen-year-old Casey Crowder vanishes early one Sunday morning after her car runs out of gas outside of Dumas, Ark.; with no leads and no witnesses, investigators are desperate to find any CCTV cameras that can lead them to the missing teenager.

A woman's New Year's disappearance leads to a gruesome discovery; with no witnesses, only the four security cameras from her apartment building can help decipher what happened.

On Nov. 7, 2014, 69-year old Ina Clare Richardson is found brutally murdered in a public park in Clarkston, Wash.; with no witnesses, investigators turn to surveillance cameras to piece together the puzzle of her fateful final night.

On April 14, 2009, 25-year old student Julissa Brisman is found shot to death in a Boston hotel room; with no witnesses, investigators turn to surveillance cameras to find a serial attacker.

On March 29, 2016, Louise Dickey is discovered murdered in a bath of her own blood; with no imaginable motive for the homicide and no witnesses, detectives seek out surveillance cameras to uncover the shocking truth.

Twenty-seven-year-old Jessika Kalaher is found strangled in her car in Cedar Park, Texas; with Jessika's wallet and car keys missing, detectives turn to security cameras in the hope of finding out who killed her.

The body of 26-year-old Celina Peterson is found in an alley in the South Park neighborhood of Seattle; when police recover surveillance footage from across the neighborhood, they begin to unravel the shocking truth behind her murder.

Emily Lambert goes missing after spending the night at a hotel bar with her new boyfriend; two days later, she's found murdered on a piece of remote farmland; detectives scour CCTV footage from the hotel and bar searching for her killer.

After Keith Reed is gunned down on his doorstep, surveillance footage helps police unravel the mystery of who killed him and why.

On Dec. 23, 2009, Beth von Steinner goes missing, then her frozen body is found days later in a trash pile behind her house; with no witness or suspects, only CCTV footage can unlock the mystery of who killed her.

A woman is shot dead during her morning jog through a normally peaceful neighborhood in Glendale, Ariz.; home surveillance footage enables detectives to identify the shooter's vehicle.

British woman Sian O'Callaghan disappears after leaving a nightclub; with the clock ticking, detectives find footage of O'Callaghan getting into a taxi and race to identify the vehicle and its driver.

In the early hours of Sept. 28, 2011, student Maple Batalia is found shot dead in the parking lot of Simon Fraser University; with over a hundred cameras at their disposal, detectives must dig through the footage and figure out who killed Batalia.

This series delves into the psychological showdown that takes place inside actual police interrogation rooms and dissects what happens to yield a confession. Each hourlong episode takes viewers through the twists and turns of a real homicide case, from the crime scene to the suspects' questioning to the ultimate confession. The police officers and detectives assigned to each case reveal their methodology while interviews with the suspects' and victims' friends and family shed light on the crime. In every case, the interrogating officer will "break" the suspect and get a shocking reveal of what really happened.

Think "Cold Case" meets "CSI" with a bit of "Rizzoli & Isles" mixed in, then make it real. That's the formula for this unscripted procedural drama that follows two veteran female investigators as they attempt to crack murder cases that have lingered for years without answers and closure. Kelly Siegler is an attorney and former Texas prosecutor who successfully tried 68 murder cases in her 21 years on the job, including 20 capital murder death penalty cases in which she secured the death penalty in 19 of those trials. She gets help from veteran detectives, who dig into small-town murder cases that have gone unsolved for years in the hope of getting justice for the victims and their loved ones.

Each episode of this true-crime reality series examines a different felon, usually a female, who has committed murder or attempted murder. The victim is usually the perpetrator's partner. The documentary-style series features interviews with friends and family members of the accused and victims, law-enforcement officials, attorneys and other people with first-hand knowledge of the cases.

Moonshiners have been around in the U.S. since the Whiskey Rebellion of the 1790s. Surprisingly, there are still a number of Americans who make moonshine -- an illegally produced distilled beverage -- mainly in the Appalachian region of the country. This docuseries tells the stories of people who brew their shine, often under the cloak of darkness in woods near their homes, and the authorities who try to keep them honest. The show allows viewers to witness practices rarely seen on television, including firing up the still for the first time -- a moonshiner's rite of passage. The show also introducers viewers to moonshining legends such as Marvin "Popcorn" Sutton.

"Murder for Hire" gives an exclusive look into the dark world of contract killings, showcasing some of the most fascinating murder for hire cases ever caught on tape. In an alarming trend, investigators are seeing a sharp increase in hired hits across the country, and those attempting shockingly include: housewives, wealthy bankers, military officers and even grandmothers. From scorned lovers to jealous relatives, the show explores in rare, never-before-seen footage, how a seemingly good relationship can go wrong and the emotions surrounding the reveal when an intended victim discovers a hit has been taken on their life. Each standalone episode features a different case of undercover agents immersing viewers into the real-life sting and investigation as they attempt to catch the perpetrator and ultimately prevent a murder.

Eagle-eyed technical experts prove there is no such thing as a perfect crime as they assemble the pieces every criminal leaves behind. Dramatic crime re-creations and, sometimes, part of the investigations are a staple of the series. Some of the re-creations include alternate versions of the crimes, which are disproved by science. The show's episodes follow each case from the initial investigation until it reaches its legal resolution.