Following the controversial Adeyemi case, Marta and Caronte defend some of the former’s acquaintances, Adela and Rosa, a mother and daughter accused of hiding a body in the wall of their nursery. The investigation will reveal dark secrets which even Adela herself was unaware of. After Natalia’s tragic loss, she decides to return home to Gijón to distance herself from all that’s happened.

Caronte is sent to prison, accused of murdering Toni after Paniagua had staged the whole thing to frame him. Marta gets down to work and, with Aurelio’s help, collects different pieces of evidence to convince the judge the commissioner had set it all up. Just when Caronte believed he’d lost all contact with Natalia, his ex reappears in Madrid to talk to him.