The central tension of the season revolves around Javier’s frequent "business trips" and a series of small inconsistencies—unexplained phone calls, a mismatched alibi, and a strange connection to a local missing persons case. The show masterfully utilizes the "unreliable narrator" trope. We see most of the story through Elena’s eyes, and as her paranoia spirals, the audience is forced to question if Javier is a villain, or if Elena’s own past traumas are fracturing her reality.

Based on the best-selling novel Fedeltà by Marco Missiroli, the show follows the lives of Carlo and Margherita, a seemingly happy couple living in Milan.