In the first book, Blomkvist visits his ex-wife and daughter, then visits his sister and her family, then is rung by Frode at the Millennium office whereas, on TV, the ex-wife and daughter are not mentioned and Blomkvist is rung by Frode while visiting his sister.
A necklace inherited from Anita was introduced on TV as a way of differentiating between Cecilia and Anita in a single photograph. In the book, Blomkvist had seen what he thought was a single woman in many group photos before he found another photo showing two almost identical women side by side. Also, Henrik Vanger had photos of Harriet's window open and closed, showing that someone had been in her room on the day when she disappeared. Then Blomkvist found a third photo with a face in the window. He thought that it was Cecilia although it turned out to be Anita. On TV, Henrik had the photo of the woman in the window and thought that it was Harriet. Then Blomkvist thought that it was Cecilia because the woman was wearing Cecilia's necklace but Cecilia said that she had inherited it from Anita.
In the book, Blomkvist visited Anita in London and traced her call to Harriet in Australia whereas, on TV, Anita was dead and Lisbeth discovered that there were two Anita Vangers, one dead, the other in Australia.
Blomkvist did not find a photo enabling him to identify Martin Vanger but instead broke into the old Nazi, Harald's, house and had to be rescued by Martin.
In the second book, the blond giant:
hallucinates;
runs when he sees Lisbeth resurrected;
is apprehended and tied up by Blomkvist;
but escapes when two cops come to collect him -
- whereas, on TV, he:
dodges when the resurrected Lizbeth fires at him;
runs when Blomkvist's car approaches.
Blomkvist had driven all the way, not gone by train first.
Blomkvist did not see Lizbeth attacked outside her flat and find the bag containing keys that she had dropped. Instead, Lizbeth visited Miriam in hospital and dropped the keys there.
