Over the last few decades, a major trend in forensic science has been the rise of doubts about previously rock-solid methods, raising serious concerns about the justice system's ability to protect the innocent and punish the guilty.

A&E True Crime spoke to experts to explore the disturbing reasons why some men kill the person with whom they've vowed to share a lifetime.

Linda Fairstein, former sex crimes prosecutor, and Cynthia Calkins, PhD, a forensic psychologist, on how we can protect our families from sex offenders.

Captain Roger Sankerdial, who works out of the 114th precinct in Astoria, Queens, shares the experience of being deployed on September 11, a mere ten weeks after beginning his police training.

Unique ways police officers around the country are working on improving their mental and emotional wellness.

MS-13 is not only terrorizing Long Island's village of Patchogue, but has Latinos who live and work there fearful that the gang's presence will contribute to widespread anti-Latino hostility.

A&E True Crime looks at some high-profile cases where crime-scene glitches may or may not have tipped the scales of justice.

Sgt James Hager of the Monroe County Sheriff's Office talks about the challenges of processing a crime scene under water and how procedures for handling violent crimes at sea differ from handling them on land.

Forensics has revolutionized law enforcement in the last several decades. We talk to the experts to see how these advancements have helped to close tough cases.

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.