Deputy Nick Carmack of the Pasco County (Florida) Sheriff's Department talks to us about life with his K-9 partner, Shep.

True-crime author Michael Arntfield talks about homicide detective Pat Postiglione, who headed up Nashville's cold-case Murder Squad and solved dozens of unsolved murders, and how the country-music mecca became a murder hub.

Read an excerpt from Michael Arntfield's true-crime book, 'Monster City,' about serial killer Tom Steeples, a computer store owner who found two of his victims, a newly married couple, at a dive bar's amateur showcase.

With the national homicide-clearance rate below 60 percent, the odds are good that eventually a detective—even an excellent one—will run into a dead end: The case that goes cold, that leaves a family grieving without justice and a detective grasping for answers, even after retirement.

A&E True Crime spoke to the Greene County (Missouri) Sheriff's Office officer about working with K-9 Lor and a few truths about police dogs that he'd like the world to know.

Tricia Griffith, who runs the web forum Websleuths, talks to A&E True Crime about her close encounter with Ted Bundy, how the online community dug into the Casey Anthony case and why she believes police should let amateur detectives help investigations.

A&E True Crime spoke with forensic podiatrist Dr. Michael Nirenberg to learn about the differences between footprints and fingerprints and why foot evidence can be so valuable to law enforcement.

To find out how one might escape a captor, A&E True Crime spoke with Lt. Chris Zimmerman, commander of the New York Police Department's Hostage-Negotiation Team.

The Live PD analyst and host of 'Live PD Presents: PD Cam,' on misconceptions about how cops use body cameras.

There were three homicides or suspicious deaths on cruise lines operating in U.S. ports in 2017. And authorities have also reported over a hundred other crimes, including sexual assaults and kidnappings. But some advocates say even more crimes are taking place aboard.