Spoiler Alert: This article will deal with details about the plot of Indiana Jones And The Kingdom Of The Crystal Skull. If you haven’t seen the movie yet, reader beware. You might learn some things you don’t want to know just yet.

For Indiana Jones fans, a new movie has been a long time in coming. A fourth film was originally suggested by George Lucas nearly 18 years ago. The idea has re-surfaced several times since then but the principal creative partners (Mr. Lucas, Steven Spielberg, and Harrison Ford) could not agree on a script until David Koepp completed a version sometime around 2005. Other screen writers attached to the project over the years include Jeffery Boam, M. Night Shyamalan, Frank Darabont, and Jeff Nathanson. Drafts by all these writers have centered around the idea of Indy searching for crystal skulls.

Given the time in development and the abundance of top-notch screenwriting talent, it is surprising that the screenplay of Indiana Jones And The Kingdom Of The Crystal Skull is a bit of a mess. Don’t get me wrong, the movie is far from awful. Parts of the movie play out simply as set pieces however, in part because of a lack of tight internal logic in the script. The movie left me asking questions about how or why certain things happened. After 18 years and several screenwriters, shouldn’t all these questions be answered?

Here’s the top five unanswered questions from Indiana Jones And The Kingdom Of The Crystal Skull.