How sound is the reasoning that a refusal to take a polygraph test is a sign of guilt? We speak to former polygrapher and current anti-polygraph activist, Douglas Williams, about what he sees as the test's fundamental problems.

Retired Detective Sergeant Joseph Giacalone had the pleasure of working with compassionate cops who truly loved the job and "cowboys" who were unworthy of the badge. Here are some of his stories.

Join Brooke Gittings from the hit podcast, Convicted, as she takes a deeper dive into the Cold Case Files episode, "A Family Cursed," in the latest installment of Cold Case Files: The Podcast.

We ask retired CSI detective Ken Martin about the legitimacy of TV cops digging bullets out of walls, tying red strings through a scene, and other forensic techniques to learn which are real and which are just for the camera.

We asked Live PD's Officer Alyssa Wright how it feels to be called a role model, working with her K-9 partner Cairo, and what you didn't see happen during that intense take down featured on a recent episode.

In the second part of a three-part series on crime-scene investigating, retired CSI Ken Martin breaks down what happens once law-enforcement teams arrive and some of the challenges he's faced in gathering evidence.

Ken Martin, a veteran crime scene investigator, describes problems that arise when gathering evidence, and how to avoid having defense attorneys claim contamination.

Join Brooke Gittings from the hit podcast, Convicted, as she takes a deeper dive into the Cold Case Files episode, "A Killer Slips Away," in the latest installment of Cold Case Files: The Podcast.

Linda Fairstein talks to us about her most memorable unsolved case, what concerns her about how sexual assaults are handled on college campuses and how she is often inspired by real-life events in her books.

Women have been murdering their children since the beginning of time. But what would drive someone to end a life they brought into the world?