Stopping an armed robbery while out on a date was just another day in the life of NYPD cop Ralph Friedman, who was the force's most decorated detective when he retired in 1984.

Dr. Peter Langman, Ph.D, one of the foremost experts in the psychology of school shooting perpetrators, talks to A&E True Crime about who commits these heinous crimes, why they do it and what we can do to prevent the next shooting.

A&E True Crime spoke to a psychologist and a criminal profiler about the serial killers featured on Mindhunter, and asked them what the show got right when it comes to their impulses and motives.

Sgt. Leverett talks to A&E True Crime about how he gets people to tell the truth, the unexpected places he's found drugs (butts aren't that unusual) and what would surprise fans to know about his K-9 partner Flex.

Melting ice that exposed the buried bodies of missing people was one offbeat way a cold case was reopened.

Authors Blaine Pardoe and Victoria Hester on why eight murders along Colonial Parkway in Virginia have gone unsolved for so long.

As much as people like to think of their four-legged friends as family members, legally, they're property.

A&E True Crime talks with Dr. Scott Bonn, criminologist and author of the book, 'Why We Love Serial Killers' about what he thinks were the powerful catalysts for the makings of a serial killer.

Some of the most notorious serial killers of our time have something in common, beside their thirst for blood: They were all adopted. A&E True Crime talks to criminologist Dr. Scott Bonn to see whether there is any evidence of an adoptee-serial killer connection.

Dressing in disguise is a time-honored Halloween tradition where self-expression and secrecy often meet. But costumes can also serve a much more sinister purpose. Learn about murderers who literally dressed to kill.