Joe Dziemianowicz

One of Dr. Martin MacNeil's daughters, a medical school student, suspected that her father was involved in her mom’s death.  

DNA evidence, digital breadcrumbs and dogged detective work lead investigators to pair behind the fatal bludgeoning. 

David Mead claimed his wife, Pamela, had slipped and drowned in their koi fish pond after recovering from bunion surgery. The truth, investigators learned, was far more sinister.

The investigation into the murder of a mild-mannered Atlanta man leads detectives to unexpected places.

Nearly four years after vanishing without a trace, the remains of the McStay family were found in the Mojave Desert.

The brutal bludgeoning death of a man known as a "peacemaker" shocked the Southern California coastal community.

Did Kristen Wagner, a young mother of three, hang herself? Investigators eventually uncovered a disturbing truth.

Detectives must determine if an Atlanta police officer was the casuality of a revenge hit or something much more personal.

A sadistic duo, Lawrence Bittaker and Roy Norris, used everyday items for torture and murder.

Dorothea Puente was ultimately accused of killing nine people — but a jury wasn't convinced.