Before the events of the novel, Grant was approached by Donald Gennaro, chief counsel for InGen, to provide information on the requirements for the care of infant dinosaurs, claiming it to be for a museum exhibit. Grant agrees to Hammond's invitation to tour the park, finding it difficult to turn down the request from a major financial donor, unaware that Hammond has cloned living dinosaurs. When the creatures escape, Grant becomes stranded in the park with Hammond's grandchildren. Throughout a large portion of the book, Grant and the two children explore the park trying to find their way back to the rest of the group. In the film, much of this period is omitted, with only a few key events occurring onscreen.