'Jurassic Park 4' Update & Story Details

12 years after the first movie, John Hammond's dinosaurs have apparently become urban legend. Most of the public has become skeptical they ever existed. Part of the plot involves the discovery of previously unidentified lizard-like animals showing up on mainland Costa Rica and conflicting with the locals (killing them?). To find out what the heck is going on, a team of experts chart an expedition to one of the off-shore islands. They find out the dinosaurs are thriving and breeding at an uncontrollable rate, so much so that it poses a threat to the nearby continent. They must find a way to curb the spread of the dinos or face an ecological disaster.

I want to make clear that is not the WHOLE story. There is apparently some top-secret aspect of the plot that they refused to even hint to me. They only said that Spielberg was "delighted" with it. In Michael Crichton's novel The Lost World it was discovered that the dinosaurs have been accidentally infected by a disease code-named DX by InGen. Expect this concept to be carried over to JPIV. They don't end up sending in the military to bomb the place, because in time, DX will prevent the dino's continued existence. This leads me to believe JPIV will probably be the last one.