In Pursuit With John Walsh

Homicide investigations are detailed.

Takes a deep dive into the stories of unforgettable murders from the streets of Philadelphia. Told through the eyes of veteran homicide detectives, local reporters and the victim's families who have lost so much, these are the cases they will never forget.

Looking into several heinous crimes done by unexpected people. As identities are revealed, a chain is completed - uncovering a grim series of interconnected crimes and a trail of suffering in their wake that haunts communities and loved ones for decades.

Incorporating bodycam footage from the initial crime scene, surveillance video, and interrogation room recordings, homicide investigations unfold through dramatic real video footage providing an up-close perspective on homicide investigations.

Like trying to decipher the value of a book without ever opening it, judging a person by his or her outward appearance can be a mistake. Someone may look perfect on the outside, but even the most kind-hearted soul has a dark side looming. "Diabolical" is a docuseries that delves into theminds of murderers, asking a simple question: "Why did they do it?" The acts were committed with extreme premeditation -- many were months or even years in the making. Tension builds in each episode as law enforcement taps into the methods of devious masterminds, aided by insights from forensic psychologists and psychiatrists as well as criminal profilers.

The tales of mysterious murders that rocked small-town America. Each hour brings you a new murder mystery and a new look into the evil that can lurk in the heart and soul of a tight-knit community. Interviews with investigators, prosecutors, family members and neighbors piece together the twisting tale of a classic whodunit.