Cases Profiled: Alfonso Fowle, Jahbir Fowle, Ali Kemp killer, Larry Raifsnider, Kevin Nolen, Paul Eischeid, Douglas Wistrom, Adnan El Shukrijumah, Darryl Williams

Cases Profiled: Brian Jones, Alfonso Fowle, Jahbir Fowle, Jeffery Manchester, Rason Horton, Sherlyn Fleming killer, Jason Richards, Eric Watkins, Mikhail Drachev.

Cases Profiled: Damar Pink, Danny Moran, Lucian Kozminski, Rebecca Braun, Mark Jackson

Cases Profiled: Antonio Delacruz, Daniel Farinholt, Armando Garcia, Emigdio Preciado, Mark Everett, Matthew Glover, Benjamin Everett, Molly Dattilo

Cases Profiled: Helen Walker killer, Jerred Hernandez, Scott Brinegar, Frederick Rosato, Phillip Ferguson, Juan Marte

Cases Profiled: Gary Lasher, Arnulfo Vargas, William Barefoot, Gonzalo Harrell-Gonzalez, Billy Brossman killer

Cases Profiled: Juan Nieto, Katie Sepich killer, Crystal Vigil, Las Cruces killer #1, Las Cruces killer #2, Gary Lasher, You Zhu

Cases Profiled: Kimberly Alvarado, Marissa Pomarico, Hazel Head, Monique Bell, Rashan Boone, Lexie Fennell, Justin Scaglione, Ran Mesika, Key West Baby Doe, Valentine's Jane Doe, Possible Key West Baby Mother, Possible Key West Baby Father, Possible Key West Baby Friend

Cases Profiled: Lucian Kozminski, Avelino Alvarado, Rufino Castaneda, Timothy Coombs, Francisco Guzman, Tobias Lee, Bao Luong, Timothy Marino, Damar Pink, BTK serial killer, East attempted abductor, Jesus Alvarado

Cases Profiled: BTK serial killer, John Addis, Victor Gerena, Sophie David, Phillip Hughes, Emily Rimel

Cases Profiled: Emigdio Preciado (10), Paul Eischeid (9), Gary Lasher (8), Mark Everett (7), Greisy Valencia (6), Damar Pink (5), Timothy Marino (4), William Plemons (3), Jahbir Fowle (1/2), Alfonso Fowle (1/2), Benjamin Everett, Joanna Rogers

Cases Profiled: Helen Walker killer, Jerred Hernandez, Scott Brinegar, Vickie Nash, Phillip Ferguson, Rosa Sandoval

Cases Profiled: Jason Brown, Anita Raughton, Jacer Medina, Justin Smith, Internet Jane Doe, BTK serial killer, Littleton suspect #1, Littleton suspect #2, Heaven Ross, Shelbie Smith

Cases Profiled: Arnulfo Vargas, Alejandro Romero, Angel Salgado, Cesar Lucero, David Drain, Eric Dahlman, Andre Neverson, Rudolfo Negrete, Larry Woods, Steven Sanchez, Brianna Maitland, BTK serial killer

Cases Profiled: Jason Brown, Fethi Jelassi, Robert Fisher, BTK serial killer, Katlyn Collman, Jason Brown witness

Cases Profiled: Loren Trites, Marvin Mercado, Stephanie Meares, Francisco Guzman, Dustin Pino, BTK serial killer, Lake Pontchartrain Jane Doe, Lisa Sexton, Ashley Martinez

Cases Profiled: Elber Vazquez, Armanious family killer, Russell Winstead, Carey Price, John Hemmers, Ronald Lennon, Robert Short, Jason Brown, Brent Brents

Cases Profiled: Craig Petties, Mark Everett, Ignacio Bahena, Randy Yager, Emigdio Preciado, Chaka Raysor, Wayne Chin, Riverside armored car killer, Benjamin Everett, Jessica Lunsford, Alexis Patterson, Nancy MacDuckston, Nancy MacDuckston companion

Cases Profiled: Angel Mendoza, Andre Neverson, Michele Comstock, Frederick Wanamaker, Michael Lefkow/Donna Humphrey killer, Yvette Martinez, Tamika Huston, Samuel Porter, Lindsey Porter, Jessica Lunsford

Cases Profiles: Joaquin Guzman-Loera, David Anguiano, Juan Carlos De La Reyna, Charles Jackson, Misty Jackson, Victor Vargas, Joseph Shegog, Marcus Head, David Saracino, Yvette Martinez, Brenda Cisneros, Gina DeJesus, Jessica Lunsford, Danielle Imbo, Richard Petrone

Cases Profiled: Fairmount Park killer, Chas Berry, Russell Winstead, Paulo Lopez-Garcia, Christian Lopez, Lawrence Wayne, Raheem Edwards, Mark Degner, Bryan Hayes

Cases Profiled: Daniel Hiers, Gary Lasher, Michel Barrera, Jorge Lopez-Orozco, Joseph Burgess, Jason Allen/Lindsey Cutshall killer, Bianca Piper

Cases Profiled: Mustapha Atat, Jason Brown, Rashawn Capers, Mikhail Drachev, Peter Hommerson, Christian Rodriguez, Greisy Valencia, Amanda Berry, Gina DeJesus, Jason Brown witness

Cases Profiled: Joel Urena, Sajjad Rasheed, Michael Soutar, Teddy Ellis, Troy Smith, Rashawn Capers

Cases Profiled: Kenneth Cofer, David Lopez, Ruben Lopez, William Fischer, Angelo Ravella killer, Sarah Lunde

Cases Profiled: Marcelo Montalvo, Francisco Diaz-Marroquin, Ivan Villa, Daniel Hiers, Mark Grossi, Sebastian Barba, Raul Garcia-Gomez, William Looney, Ronald Fischer, Gerren James, Justin Black, Tracey Gardner-Tetso

Cases Profiled: Phillip Williams, Emanuel Veiga, Idaho triple murderer, Shasta Groene, Dylan Groene, Pamela Waldher

Cases Profiled: Martin Altamirano, John Addis, James Moran, Joanne Chesimard, Walentina Knapek, Sgt. Greg Martin killer, Idaho triple murderer, Dylan Groene, Shasta Groene, Lindsay Harris

Cases Profiled: John Lockhart, Artur Martirosyan, Anibal Mustelier, Malaika Griffin, Daniel San Diego, Casey Jo Pipestem killer, Natalee Holloway, Brooke Wilberger.

Cases Profiled: Domingo Valdez, Douglas Holler, Mark Everett, Rogelio Deaquino, Andre Neverson, Elby Hars, Lake Pontchartrain Jane Doe killer, Victor Hernandez, Benjamin Everett, Ana Acevedo, Lisa Sexton.