Just in case you hadn’t guessed after nearly 1,800 pages of the ‘Millennium’ trilogy, the late Stieg Larsson has his alter-ego hero Mikel Blomkvist spell it out. ‘This story is not primarily about spies and secret government agencies,’ he says. ‘It’s about violence against women and the men who enable it.’

Larsson’s three Millennium books, which feature adult reboots of Astrid Lindgren’s children’s characters Pippi Longstocking and Kalle Blomkvist, are slow-burners in the crime fiction charts. In almost every country in which they are published, sales for the first book are modest. When the second comes out things start picking up. By the time the third is released, publication is a big deal, and all three books usually bound back to the top of the bestseller lists. Anglophones are not about to buck the trend. The Girl Who Kicked The Hornets’ Nest should run Dan Brown close this Christmas.

In that context what is surprising — or perhaps not — is that Larsson’s books get worse as he goes along. The first book, known in English as The Girl with the Dragon Tattoo, was excellent. It stood the locked-island murder mystery scenario on its head and introduced a truly unusual central character: Lisbeth Salander, the tattooed, bisexual, post-punk genius computer hacker with a photographic memory but virtually no social skills. Dragon Tattoo contained the defining moment in the trilogy, when Salander tied up her abusive legal guardian and tattooed across his belly the phrase ‘I am a sadistic pig, a pervert and a rapist.’ Hurrah!

Now, having put Salander and Blomkvist through a fairly risible police procedure caper in the second book (The Girl who Played with Fire), Larsson completes the story by morphing it into an ultra-conventional spy thriller. We’ve come from genre-buster to posh potboiler in the space of two books.

This story takes up where the the previous one ended, with — spoiler alert! — Salander in hospital. She has survived being shot through the head and buried alive by her father and half-brother. However, because her father happened to be a KGB spy who defected to Sweden in the 1970s, Salander receives no sympathy from the state. Instead a rogue cell inside the Swedish security service is plotting to have her declared officially bonkers and carted off to the madhouse. Naturally, it is up to Blomkvist and a small harem of superchicks (a female lawyer, female security agent, female cop, female newspaper editor etc) to save the day by exposing this rotten conspiracy, which stretches to the top of Swedish government.

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