How does the author use foreshadowing in The Egyptologist?

In Journals 90-99, everything seems to mock Ralph. Carter's discovery of King Tut's tomb attracts many people because Carter has indeed found great treasures and has achieved fame, and thereby immortality. The visiting police officer, sent by Carter, could have been a path to redemption, had Ralph not murdered CCF. An even better path opens to him from Sonia Nordquist—an idyllic life in Minnesota serving as her handyman, cook and gardener. All means nothing now. He can never marry Margaret after he has killed her father, and leaving Egypt for Minnesota would simply delay his murder trial. The arrival of Ferrell exacerbates the situation, especially the part about bringing the police with dogs to his site. Ralph seems to know that something is buried in the sand—Marlowe for certain, possibly Paul Caldwell—and then the crushed body of CCF in the tomb. Ralph's irrational action of buying tickets for himself and a dead man may be a way to divert Ferrell away for a period of time. In this sense, the action is not irrational but is a fairly good scheme to throw the detective off track. Ralph's mind still works logically as he refutes Ferrell's accusations, even if he slips in his storytelling by admitting to knowledge that he should not possess. His reference to Beverly as being female may be another slip in a Paul-playing-Ralph act.

Two events foreshadow what Ralph has in mind. He invents the thought that Amut-hadu should carry the Master of Largesse into the tomb, and he steals preservative chemicals from Carter's site. Ralph's terrible condition, as Ferrell graphically describes, precludes him from actually asking for the chemicals.