The Girl with the Dragon Tattoo

Chapter-by-chapter summary

Spoiler warning: this section covers the whole plot, including the ending.

Prologue to Chapter 4: The offer

The prologue shows Henrik Vanger, an old industrialist, receiving a pressed flower on his birthday, as he has every year since his grand-niece Harriet vanished in 1966. In the first chapters, Mikael Blomkvist, part-owner of the magazine Millennium, loses a libel case over his reporting on the financier Hans-Erik Wennerstrom and is sentenced to three months in prison. Lisbeth Salander, a researcher at a security firm, writes a thorough report on him for a client she does not know. That client is Henrik. In Chapter 4 he makes his offer. Blomkvist will write the Vanger family history, and Henrik promises material against Wennerstrom in return. The real task is to find out who in the family killed Harriet. Why it matters: the offer turns a disgraced journalist's cover job into the book's central investigation.

Chapters 5 to 18: Two investigations

Blomkvist moves into a cottage on the Vanger estate and starts on the police files, the family tree and the photographs of the 1966 Children's Day parade, the day Harriet disappeared. Salander's story runs beside his. Her court-appointed guardian, Nils Bjurman, abuses the power he has over her. The book shows her backstory and then her answer: she records him and takes control, forcing him to leave her alone. By the end of this stretch Blomkvist is working with Salander as his researcher. Why it matters: two separate cases, one about a vanished girl and one about a guarded young woman, begin to show the same pattern of abuse hidden behind a respectable role.

Chapters 19 to 23: The pattern and the trap

Henrik is in hospital, and several Vangers, including Cecilia, want the investigation stopped. Martin Vanger, Harriet's brother and the company's chief executive, stays friendly. In Chapter 19, Salander links names in Harriet's date book, together with the Bible verses written beside them, to a series of murdered women, one of them killed in 1960. In Chapter 21, an enhanced parade photograph shows a man in a dark jacket with a red patch on the shoulder, and the pair find a burned, mutilated cat on the porch. In Chapter 22, someone shoots at Blomkvist while he is jogging. The first bullet hits a concrete wall, and a chip of concrete cuts his temple. In Chapter 23, Blomkvist finds old photographs that explain why Cecilia seems to appear in so many of them: the woman in Harriet's room that day was her sister, Anita. Another photograph shows the man in the dark jacket, and he is Martin. Blomkvist goes to Martin's house, and Martin pulls him into a basement built for torture and chains him to the floor. Why it matters: the investigator walks straight into the killer's home just as the pattern comes together.

Chapters 24 to 27: Rescue and answers

In Chapter 24, Salander works out that Martin is the killer and reaches his house in time. In the basement, Martin explains that his father, Gottfried, murdered the first seven women on Blomkvist's list, and that he himself killed the eighth and kept going. Salander beats him with a golf club and cuts Blomkvist down from a noose. Martin flees by car, and Salander follows on her motorcycle. Martin drives straight into a truck and dies. In Chapter 25, Salander removes the evidence from his house, and she and Blomkvist realise that photographs found there show the teenage Harriet. In London they trace a call from Anita Vanger to a woman in Australia. In Chapter 26, Blomkvist finds Harriet on a sheep farm. She tells him that Gottfried raped her for a year, and that one night she held him under the water of the lake and killed him. Martin then abused and threatened her. Anita helped her leave the island and gave her a passport. In Chapter 27, Harriet returns to Henrik. She had sent the flowers so that he would know she was alive. Henrik asks Blomkvist not to publish Martin's crimes, and Blomkvist reluctantly agrees. Salander tells him that she has a copy of everything on Wennerstrom's computer. Why it matters: the family's story about Harriet was wrong, and the truth was worse than a single murder.

Chapter 28 and the Epilogue: Wennerstrom falls

Blomkvist learns how Salander broke into Wennerstrom's computer: she attached a device to his broadband connection and can watch everything he does. The documents behind Blomkvist's libel defeat were planted by an informant, and a Millennium employee, Janne Dahlman, has been passing information to Wennerstrom. Blomkvist plans a special issue of the magazine, and Harriet, now head of the Vanger company, joins its board. Salander also moves money out of Wennerstrom's accounts. The epilogue shows the special issue going out. It shakes the Swedish stock market and reveals the empire's links to criminal networks, and news reports soon announce Wennerstrom's demise. Why it matters: the corporate case closes, while Salander's own story is left open for the sequels.

Characters

• Mikael Blomkvist: A journalist and part-owner of Millennium, known for his reporting and for the libel case that damaged his name. He is patient and stubborn, and once he has a question he will not let it go, even when the people around him want it closed.
• Lisbeth Salander: A gifted hacker and researcher who grew up under state guardianship. She is private, sharp and hard to read, and she is better than almost anyone at finding what others have hidden, including the secrets in her own past.
• Henrik Vanger: A former head of the Vanger industrial group and the family's senior figure. For almost four decades he has held onto the question of what happened to his grand-niece, and he hires Blomkvist to finally answer it.
• Harriet Vanger: Henrik's grand-niece (he usually calls her his niece), who vanished in 1966 and was long presumed murdered. She is the book's central mystery. She fled the island after the abuse she suffered, and her reappearance changes how the whole story should be read.
• Martin Vanger: Harriet's brother and the company's chief executive. He is a respected figure in the family and the business, and he is also the killer whose crimes continue into the present day.
• Hans-Erik Wennerstrom: A wealthy financier at the centre of Blomkvist's libel case. He is powerful and secretive, and he planted an informant to feed Blomkvist false documents. Salander's hacking shows how much more he has been hiding.
• Nils Bjurman: Salander's court-appointed guardian and lawyer. He abuses the legal power he holds over her. His role shows how a position meant to protect someone can be used to harm them.
• Erika Berger: Millennium's editor-in-chief and co-owner. She works closely with Blomkvist, and the magazine she runs is where the book's journalism plays out. Her decisions shape what the public learns.

Writing about this book

If you are writing a book report on this novel, start with a question rather than a summary. Blomkvist and Salander both work from the margins, and both are doubted by people with more power. Compare how each of them earns trust, and what that costs them.

Ask why the family kept its silence for so long. Was it loyalty, fear or self-protection? Your answer will change how you read the family's respectable public face, which the book treats with suspicion.

The book also asks you to think about violence that hides behind a good name. Think of a case from your own world where a respected role made a problem harder to see, and compare it with the novel.

Keep the report in your own words, and name the chapter whenever you refer to a scene. Strong reports show what you noticed, not just what happens.