Unsolved Mysteries with Robert Stack

A nail-biter from Jerry Bruckheimer revolves around Philadelphia homicide detective Lilly Rush, whose investigation of long-unsolved crimes is driven by the belief that 'people shouldn't be forgotten.'

When relationships go bad and one partner becomes obsessive, the gruesome fact is that, sometimes, the victim can pay the ultimate price.

A look at some of the biggest cases handled by real-life FBI agents and analysts.

An FBI special agent in Los Angeles teams with his mathematical genius brother to solve crimes. Don, a veteran investigator, relies on hard facts and evidence to catch crooks, while his younger brother Charlie, a brilliant university professor, analyzes mathematical equations and statistics to provide case clues.

A classic series of films exploring nature and man in various cultural and historical contexts. Beginning in the 1960s (when they aired on CBS), the specials set a standard for vivid documentary filmmaking and the many 'Nat'l Geo' prizes include Emmys for 'Mysteries of the Mind' and 'The Invisible World.' With the advent of cable, the specials evolved into two series before the creation of the National Geographic Channel in 2001.

The tale of trail boss Gil Favor and his trusty foreman Rowdy Yates as they drives cattle across the old west. Along the way they meet up with adventure and drama.