"New writers were brought in to scribe a story involving Pteranodons escaping from Site B and causing a spate of mysterious killings on the mainland, which was to be investigated by Alan Grant and a number of other characters including Billy Brennan, a naturalist named Simone, a tough military attaché, wealthy Paul Roby, and Roby's teenage son Miles. Grant's group crash-lands on the island, while a parallel investigation is being carried out on the mainland. The aviary sequence and laboratory set piece were initially much longer and more complex, including Velociraptors stealthily entering the hatchery as the team spends the night there. Sets, costumes, and props were built for this version, before Johnston rejected the entire script five weeks before filming in order to pursue the "rescue mission" plot"
