When she completes the murder, she returns to her husband, and he is forced to stay with her because he had already publicly proclaimed his love for her in the media. He is afraid everyone who believes her will think he's a monster for leaving his wife after she had been through an abduction. As he considers how he will spend the rest of his life, she reveals to him that she is pregnant. She took his sperm from before this whole ordeal to a doctor who inseminated her. His options were then limited to staying with his crazy wife or leaving his crazy wife to raise their child by herself. He chose to stay.
The first major difference between the book and the movie is how her disappearance was planned. In the book, the husband wakes up and sees his wife downstairs. We get the obvious sense that he no longer loves her, "There's something disturbing about recalling a warm memory and feeling utterly cold" (Flynn, 2012, p. 7). He also still remembers that it's their 5 year anniversary and that Amy will have her annual scavenger hunt set up for him. He recalls how he never guesses the answers correctly and how this always leads to a fight. However, in the movie, Nick is only reminded of the scavenger hunt when the police find the first clue. This is after Nick is forced to call the police when a neighbor reports something fishy. When the police arrive, they find signs of a struggle along with the first clue. This clue leads them to his office at a school where he sometimes teaches classes. Little did everyone know, all these clues led to locations where Nick engaged in his affair for the past year. Earlier that morning, Amy had spread her blood all over the kitchen floor and then sloppily cleaned it up to make it look like someone had tried to poorly cover their tracks in her abduction. One difference here is that in the book, she slices her arm open and refuses to place a tourniquet until she is almost too weak to, "I ended up cutting into the inside of my upper arm, gnawing on a rag so I wouldn't scream" (Flynn, 2012, p.