La diosa de tres cabezas (Percy Jackson y los dioses del Olimpo, 7)

As a demigod, Percy Jackson has been in some pretty tough situations, the kind where you think you won't make it out alive. But it turns out there was something worse, a mission on another level: getting into college. Along with his friends, Percy has to get his second letter of recommendation. It seems easy, but three things complicate things: the goddess Hecate, his pets… and Grover's dangerous curiosity. Before they know it, the situation spirals out of control. A dilapidated house, a huge animal lost in the middle of New York City, and an angry goddess: things couldn't get any worse… or could they?