Investigators Begin to Notice a Pattern with Baton Rouge Killings
Female Body Found Near Baton Rouge
In Memory of Chief Charles Moose
Who Was John Allen Muhammad?
James Martin Was Shot Sniper-Style
Dr. Henry Lee Shares His DNA Findings
Tina A. Brown Brings Humanity to the Murder Victims
Matthew Steven Johnson: Disorganized Offender
Perfecting the Hunt
No Scene at the Crime Scene
Wall of Victims
Half a License Plate
On the Hunt
Police Find Purse of Murdered Louisiana Woman
Police Believe That Two People May Be Involved in Phoenix Shootings
Police Connect Unsolved Murder To The Baseline Killer
Bullet Casing At Crime Scene Connects To Baseline Killer
Serial Shooter Victim Gives Vital Clue
Tourniquet Killer Seemingly Contacts Media
Texas Desert Turned into Killer’s Burial Ground
How El Paso Police Realized There Was a Serial Killer
Potential Witness Found by Tourniquet Killer Victim
Why Did the Tourniquet Killer Stop?
An Exclusive Look Back at the Case of the Desert Killer
Women’s Bodies Found in L.A. Alleys
License Plate Clue Emerges in ‘Grim Sleeper’ Murders
How Police Identified Larry Eyler Victim
Gay Community on Lookout for Serial Killer
Larry Eyler “Played Games” with His Boyfriend
Man Found “Gutted Like a Deer”
Why Stabbing Is an “Intimate Form of Attack”
Sisters Vanish After Accepting A Job At A House Cleaning Company
Police Surveil Charlene and Paul Runge
Police Find Key Evidence For The Pasanbegovic Murder Case In A Garbage Bag
FBI Look To Get An Arrest Warrant For Paul Runge
Two Bodies Found Bound Together In Apartment Fire
Chicago Police Repeatedly Find Similarities In Homicide Cases
DNA Found At Claudia Robinson’s Crime Scene Links To A Local Murder Case
Rhonda King’s Body Found In Abandoned Building In Chicago
Victim Describes Her Encounter With The Englewood Killer
Mary Pohlreich’s Friend Describes Their Relationship Before Her Murder
‘He Was In My Home,’ Bellevue Resident Says About George Waterfield Russell
Police Describe Their Casual Encounters With George Waterfield Russell
Police Talk To Local Drug Dealers and Gangs For Tips On The Englewood Killer
The Englewood Killer Stole Women’s Shoes
Woman Calls 911 After Mysterious Knocks on Her Door at Night
Fast Food Employee Finds Body Behind Restaurant
Who was Mary Ann Poehlriech?
Friend of Albert Morris Spoke to America's Most Wanted
Suspect in the I-95 Murder Cases Lived in the DC Metro Area
Jackie Strickland Almost Becomes a Victim of The I-95 Killer
Albert Morris Meets "Joey Pearson"
John Roberts is Found Dead in His Home
Police Respond to the Scene of Jay Hinton's Murder
Who Was Michelle Gordon?
The Route 40 Killer's Wife Called Police to Get Their Van Back
Officer Reneé Taschner Put Herself on the Line to Catch the I-40 Killer
Delaware Police Execute Decoy Operation
Suspect Found in String of Murders in Delaware
Delaware State Police Respond to Report of a Body Found on Construction Site
Mark Of A Serial Killer Returns On Monday, April 12th
Derrick Todd Lee Was A Peeping Tom
DNA Ties Derrick Todd Lee To 'Baton Rouge Serial Killer' Case
'Baton Rouge Serial Killer' Dies From Heart Disease
Louisiana Serial Killer Strikes Again
Connie Warner And Randi Mebruer
What Happened To Connie Warner?
Writing The BTK Serial Killer's Biography
Square Knots Link BTK Killings
Charlie Otero Speaks Out On BTK Killings
Serial Killer Taunts Wichita
Who Survived The BTK Serial Killer?
The BTK Serial Killer's Letter
The Case Of Randall Woodfield
Randall Woodfield's Warning Signs
What Was The I-5 Killer's Mark?
Which Serial Killer Used Athletic Tape In His Attacks?
The Murders of Darcey Fix And Douglas Altig
Man Wearing Hoodie Assaults 2 Women In Washington
Ex-Wife Of Bobby Joe Long Remembers Marriage
What Was Bobby Joe Long's 'Mark'?
Survivor Lisa McVey Opens Up About Bobby Joe Long Attack
What Was Robert Hansen's 'Mark'?
Who Was Tami Pederson?
Surveilling Robert Hansen
Another Body Discovered Near Tampa
Investigators Hunt Florida Serial Killer
Woman's Body Found Dumped In Tampa Field
What Was John Wayne Gacy's Childhood Like?
John Wayne Gacy's Friend Opens Up
How Was John Wayne Gacy Caught?
Body Found In Remote Alaskan Town
Detectives Profile Alaskan Serial Killer
Alaskan Serial Killer Case Gets Big Break
New York Serial Killer Inspired By Zodiac Murders
New York Zodiac Killer Finds Love Behind Bars
What Was The New York Zodiac Killer's Calling Card?
Bodies Found Washed Ashore In Illinois
When Were John Wayne Gacy's Victims First Found?
'Son of Sal' Kills Three Shopkeepers Around New York City
Who Is Salvatore Perrone?
'Son of Sal' Claims He Was CIA Assassin
Copycat 'Zodiac' Killer Strikes In New York
New York 'Zodiac' Killer Followed A Distinct Pattern
New York 'Zodiac' Killer Sends Letter To Media
Mark of a Killer Returns on April 9th at 9/8c
Police Get a Description of the Suspected "Weepy Voice Killer"
Shop Owner Shot Down In Bensonhurst
'Son of Sal' Strikes In Bay Ridge
What Was David Berkowitz Like Growing Up?
Was David Berkowitz Fit To Stand Trial?
The .44 Caliber Killer
What Was The 'Weepy Voiced' Killer's MO?
Who Was The 'Weepy Voiced' Killer?
'Weepy Voiced' Killer Terrorizes The Twin Cities
Who Was Son Of Sam?
What Motivated Son Of Sam To Kill?
The Son Of Sam Shootings
Audio is Released of the "Weepy Voice Killer" in Hopes of Finding a Suspect
Female Victim Discovered Near St. Paul, MN in 1981 Had "Wounds From an Ice Pick"
Mark Of A Killer Bonus: Murder of Dr. Claudia Benton (Season 1, Episode 6)
Mark Of A Killer Bonus: Resendiz “I Was Here” Signature (Season 1, Episode 6)
Mark Of A Killer Bonus: Trouble Locating Angel Resendiz (Season 1, Episode 6)
Mark of a Killer: Claudia Benton is Found Dead in Her Home in 1998 (Season 1, Episode 6)
Mark of a Killer: Authorities Search for Rafael Resendez-Ramirez (Season 1, Episode 6)
Mark of a Killer: Claudia Benton's Killer Left a Crime Scene in Disarray (Season 1, Episode 6)
Mark a Killer: Robin Samsoe's Friend Describes the Last Day She Saw Her Alive (Season 1, Episode 5)
Mark of a Killer: Rodney Alcala was a Collector (Season 1, Episode 5)
Mark of a Killer: Hikers Find a Brutally Murdered Body in Los Angeles (Season 1, Episode 5)
Mark of a Killer: Did Rodney Alcala Also Kill Several Women in New York City? (Season 1, Episode 5)
Mark Of A Killer Bonus: Rodney Alcala Classified As A Sexual Sadist (Season 1, Episode 5)
Mark Of A Killer Bonus: Rodney Alcala, Wanted Fugitive (Season 1, Episode 5)
Mark Of A Killer Bonus: Rodney Alcala’s Psychopathic Behavior (Season 1, Episode 5)
Mark of a Killer Bonus: Roger Kibbe Gave Explicit Details of His First Victim to Law Enforcement (Season 1, Episode 4)
Mark of a Killer Bonus: Was Roger Kibbe Cutting His Victims' Hair to Keep as Trophies? (Season 1, Episode 4)
Mark Of A Killer Bonus: The Source Of Roger Kibbe’s Irregular Clothing Cutting (Season 1, Episode 4)
Mark Of A Killer Bonus: Survivor, Debra Guffie Leads To The Downfall of Roger Kibbe (Season 1, Episode 4)
Mark Of A Killer Bonus: FBI Profiler Explains Serial Killer Behavior With Victim Stephanie Brown (Season 1, Episode 4)
Mark of a Killer: Sacramento Area Victims Are All Found with Their Clothing Cut (Season 1, Episode 4)
Mark of a Killer: A Body is Discovered in a Ditch in Sacramento in 1986 (Season 1, Episode 4)
Mark of a Killer: Charmaine Sabrah Goes Missing (Season 1, Episode 4)
Mark of a Killer Bonus: Charles Albright Was Hostile on Ride to the Dallas Homicide Division (Season 1, Episode 3)
Mark of a Killer Bonus: Were Charles Albright's Murders Inspired by Bible Passages? (Season 1, Episode 3)
Mark of a Killer: Pattern of Murder (Season 1, Episode 4)
Mark Of A Killer Bonus: Charles Albright, The Eyeball Killer (Season 1, Episode 3)
Mark Of A Killer Bonus: Rookie Cops Befriend Sex Workers During The Murders of Charles Albright (Season 1, Episode 3)
Mark Of A Killer Bonus: Forensic Psychologist Examines Charles Albright Psyche (Season 1, Episode 3)
Mark of a Killer: Prostitute Talks to Police About Attack Possibly Linked to Charles Albright (Season 1, Episode 3)
Mark of a Killer: Dallas Forensic Pathologist Discovers Gunshot Victim is Lacking Eyeballs (Season 1, Episode 3)
Mark of a Killer: An Eye for Murder (Season 1, Episode 3)
Mark of a Killer Bonus: Richard Rogers’ Special Skill (Season 1, Episode 2)
Mark of a Killer Bonus: The Last Call Killer’s MO (Season 1, Episode 2)
Mark of a Killer Bonus: The Last Call Killer’s Unlucky Mistake (Season 1, Episode 2)
Mark of a Killer: Peter Anderson Becomes Richard Rogers' Fourth Victim (Season 1, Episode 2)
Mark of a Killer: The Last Call Killer at The Five Oaks Piano Bar (Season 1, Episode 2)
Mark of a Killer Bonus 101: A Crucial Piece of Evidence
Mark of a Killer Bonus 101: The Murder Scene of Christa Hoyt
Mark of a Killer Bonus 101: Danny Rolling Sang at His Execution
Mark of a Killer 101: Danny Rolling's Dysfunctional Upbringing
Mark of a Killer 101: Danny Rolling Confides in Forensic Psychologist About Previous Murders
Mark of a Killer 102: The Last Call Killer
Mark of a Killer 101: Law Enforcement Finds a Tape of Danny Rolling
Mark of a Killer 101: A Tip About the Gainesville Ripper
Mark of a Killer 101: The Gainesville Ripper Strikes at University of Florida