In January 2003, Jeff Goldblum said he had been asked to stay available for a possible return of his character Ian Malcolm. On January 30, 2003, it was reported that the story would involve dinosaurs migrating to the Costa Rican mainland. A team of experts, including Alan Grant and Ian Malcolm, chart an expedition to one of InGen's offshore islands and discover the dinosaurs breeding uncontrollably. The plot would involve the characters devising a solution to restrict the spread of the dinosaurs and prevent an ecological disaster. It was also reported that the plot contained a "top-secret aspect". Early concept art depicted genetically engineered human-dinosaur mercenaries. In April 2003, Stan Winston confirmed his special effects studio was in the design phase for the film. Winston also said that Spielberg wanted to adapt several previously unfilmed scenes from Michael Crichton's Jurassic Park novel and its sequel, The Lost World. In July 2003, Keira Knightley said she was in consideration for two separate roles, including a small role as a granddaughter. Monahan's first draft of the script was finished later that month, with a story no longer set in the jungle as in the previous films. A director had yet to be discussed at that time. Neill confirmed he would reprise his character, with filming set to begin in 2004 in California and Hawaii.