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.

Tom and Jill Estes' bodies are found behind a dumpster in Festus, Mo.; police are baffled until a receipt leads to CCTV footage of a blood-stained suspect; a trail of bodies reveals a killer who must be stopped before he strikes again.

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.

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.

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.

In San Antonio, Christopher Duncan leaves his apartment never to return again; police have little to go on until surveillance footage offers up the possible identity of a dangerous killer.

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.

Fifty-one-year-old care worker Torrance Cheeves is found murdered in his San Antonio home; with no suspects and a trail of puzzling evidence, investigators turn to surveillance cameras in the surrounding area for answers.

On Oct.1, 2009, Natasha Cournoyer, 37, disappears without a trace in Laval, Canada; as her friends and family struggle for answers, detectives must follow a stone-cold trail to uncover her final footsteps caught on surveillance cameras.

Twenty-three-year-old student Dalene Carlson vanishes while out with her friends on a Saturday night; last seen hanging out at a bar, security footage reveals a number of potential suspects in Carlson's disappearance.

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.

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.

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.

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 Valentine's Day 2015, James Enright, 27, is stabbed to death outside a busy train station in Burnaby, Canada; despite cell phone footage of the attack, police struggle to identify his killer, until CCTV leads them to an unlikely suspect.

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.

A woman vanishes after a night out, and the only clues left behind are suspicious drag marks outside her home; closed-circuit television footage reveals three different suspects on the scene.

When a teenager goes missing from her local Walmart, detectives struggle for leads; then, surveillance cameras reveal terrifying footage of a prowler kidnapping her, transforming this investigation into a desperate race to bring her home alive.

When 27-year-old Christie Wilson disappears after a night at a local casino, surveillance cameras show her gambling with a mystery man.

Visiting family in Shreveport, La., Tosha Lampkin disappears after making a late-night trip for food, then her burnt-out rental car is discovered along with her remains; CCTV cameras provide detectives with their only lead on her killers.

On Nov. 12, 2012, Atlanta entrepreneur Terry Porter is found shot dead execution style in his front yard; there is no forensic evidence or witnesses, so detectives attempt to use surveillance footage to catch Porter's killer.

Investigation Discovery's "The Murder Tapes" chronicles homicide investigations using raw and unfiltered footage, including body-cam, surveillance and interrogation-room footage. Family members react in real time, investigators give their first impressions at crime scenes and suspects protest their innocence before coming clean. Viewers see and hear it all, getting up-close and personal with real-life murder investigations. Episodes track cases from start to finish, proving that the truth wins out when tapes roll.

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.