The 10 most unnecessary movie trilogies in movie history — sorry

At this point, we'll probably never find out what happens to Eddie Redmayne's Newt Scamander.

Jeff Spicer/Getty Images for Warner Bros

• Sometimes, a story needs three installments to be told fully.
• Other times, a movie is such a big hit that the story is stretched out over three films.
• Or, in the case of "The Hangover," the same story is told three times in a row.

It's no secret that intellectual property is one of the most important commodities in Hollywood.