A husband and father found brutally murdered on the beach, a hitman behind bars, and a wife accused of orchestrating everything – vanished without a trace. Go inside the mystery and manhunt for Texas' most wanted female fugitive.

It's a case Houston will never forget. In the late 1990s, panic swept through railroad towns over a train-hopping serial killer who murdered his victims near tracks.

A legendary Houston police detective looks back on the shocking murders of a young family - and his years-long search for the truth.

She was the glamorous River Oaks socialite who had it all. Joan Robinson Hill - striking, talented, and a national equestrian star. In the 1960's, she and her plastic surgeon husband, Dr. John Hill, were at the top of Houston society.

30 years ago this summer, 14-year-old Jennifer Ertman and 16-year-old Elizabeth Pena decided to take a shortcut home through T.C. Jester Park. They walked straight into unimaginable horror.