- Evelyn Pons: No, it was grown-up stuff.
- Paula Novoa Pazos: What does THAT mean?
- Evelyn Pons: I don't know. It's what my mom always says when I don't understand something: "It's grown-up stuff."
- Martín Moreno: [hiking towards the school] Hey, shall we stop and have our sandwiches so we can rest up?
- [Lucas shrugs]
- Martín Moreno: Sit over there. Come on.
- Lucas Moreno: No. No. Not there.
- Martín Moreno: Why not? What's up?
- Lucas Moreno: I've dreamt about that place. I've dreamt there was a dead man buried in a box down there, and two men dug him up.
- Jacinta García: My name is Jacinta and I don't have a boyfriend, but don't worry. I don't want one, either.
- Julia Medina: [first time in the tunnels] Is it dangerous?
- Roque Sánchez Navas: Dangerous? No. We've only found five dead kids and one dead teacher you've never met, and some creepy cages.
- Julia Medina: What?
- Roque Sánchez Navas: And Marcos got hit on the head - but, besides that, it's cool.
- Saúl Pérez Sabán: How do you tell a mother that her child has drowned or been devoured by animals?
- Fermín de Pablo: With the same cold-heartedness that allows you to prevent her from seeing her other kids.