When Ana (Eva Longoria) learns the long-held secret of Isabela's (Alex Meneses) actual birthday, the cast battens down the hatches. Fearing the wrath of the aging actress but wishing the cast was closer, Ana announces her new open-book policy: no more secrets! First to test the new policy is Mimi (Diana Maria Riva), who tells Ana she secretly wants to sleep with Rodrigo (Amaury Nolasco).
Just when Isabela's birthday angst seems to reach its peak, her twin sister, Carmen, shows up. Their relationship seems suspiciously loving, which unnerves Gael (Jose Moreno Brooks), who usually receives the brunt of Isabela's wrath. He quickly warms to Carmen, and is soon regaling her with Isabela's many peccadilloes. But when Carmen reveals she has secretly recorded everything he's said for a tell-all book, he knows Ana's open-book policy is for the birds, and it's not long before Mimi reaches the same conclusion. Ana and Gael decide to confront Carmen, bringing on an all-out twin fight as Isabela wrestles Carmen for her phone. Predictably, Isabela prevails, and the secrets of Las Leyes de Pasion are once again under wraps.