With no news of Volkov and the engineer missing, a desperate call changes everything: Marta has discovered something about her husband and needs to talk to Elsa.

The discovery of the payment Adaro made to the Caine Industries engineer poses a major threat. Michelin, aware that the businessman no longer trusts Elsa, sets a trap for Telmo to divert suspicion.

Iñaki's investigation bears fruit and reveals the identity of the mole. But Elsa, blinded by her journalistic instinct, jeopardizes the infiltration by exposing extremely serious information.

At the Center, they've discovered that Elsa has compromising information about Enrique Adaro. Although the journalist wants to publish it, Michelin offers her a deal: she'll collaborate with them by infiltrating the businessman's inner circle.

The murder of one of its members confirms El Centro's worst suspicions: they have a mole. While they launch a search operation, Elsa will launch an investigation to uncover the truth about Morata's death.

From El Salvador, a journalist contacts the CNI (National Intelligence Center) to provide information about Volkov, a GRU agent who is planning the entry of Russian spies into Spain. But the journalist is kidnapped before he can transmit the information.