Shy lawyer and board member secretly in love with Anita. He aids her revenge plot and becomes her husband and putative father. However, he is revealed to be a manipulative profiteer with psychiatric issues who uses her for career advancement. He blackmails her over illegal drugs, evicts her, lies about his family, and attempts to murder Gianna before being framed but escaping.
Their relationship shifts from secret affection to marriage and then to betrayal.
Biagio secretly loves Anita, becomes her putative partner during the pregnancy, and eventually marries her.
Gianna becomes a direct target of Biagio's criminal actions.
Biagio tries to poison Gianna, and Anita discovers the plan by entering the house through the terrace.
Enrica's investigation exposes the deception supporting Biagio's public identity.
Enrica uncovers that Biagio lied about his parents and invented the existence of his grandmother Dora.
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