Enrico Giannini is the husband of Annika Giannini and the brother-in-law of Mikael Blomkvist. Blomkvist attends a party at his house in The Girl Who Played with Fire before he discovers the murders of Dag Svensson and Mia Johansson.
Annika Giannini: wife
Mikael Blomkvist: brother-in-law
Pernilla Blomkvist: niece