Unknown Story

A close look at the '70s and '80s series "Three's Company" and the changes that it underwent.

"Jurassic Park" and the blockbuster sequels are the highest-grossing movies in history.

A close look at the early days of what eventually became one of the most lucrative movie franchises worldwide.

"Raiders of the Lost Ark" becomes one of the highest-grossing films of all time.

The forward-thinking of Ball and Arnaz revolutionized how television is made on multiple levels.

A close and intimate look at the early days of "Cheers" and the casting of memorable characters.

Taking a close look at how the seven castaways secured their place on the island.

A close look at the elements that had to come together to make "Star Trek" a multi-season series.

The impact on audiences and critics when "The Karate Kid" premiered 35 years ago.

Heather Langenkamp explains some of the behind-the-scenes tricks of the trade in a scene.