Arum reveals he uses drugs and offers some to Mackenzie, shattering her image of him as innocent.
1. 'Devoradora de Libros' reads Part 14 of 'La cabaña,' a YA mystery-thriller narrated by Mackenzie, a teenager investigating the deaths of four friends.
2. The primary characters in this chapter are Mackenzie (narrator), Aaron (a suspect friend), and Blake (the love interest and investigation partner); Blake's mother Eloís has a brief but pivotal scene.
3. The chapter's core question is whether Aaron — a lifelong trusted friend — could be the killer, based on his newly revealed drug use and access to dealers.
4. The chapter opens with Mackenzie arriving at Aaron's house alone to investigate him, arriving after a longer walk to retrieve her car than expected.
5. Aaron greets her warmly and invites her upstairs for tea and chocolate, describing himself as the same caring friend she has always known.
6. When conversation turns to Tilly's upcoming birthday, Aaron reveals he plans to 'get high' to cope with the anniversary, using the phrase 'it works great when you stop caring about everything.'
7. Mackenzie is stunned; she had assumed none of her friends used drugs, despite Aaron's openness about alcohol and sex.
8. Aaron asks if Tilly also used drugs, to which he answers 'sometimes,' and then offers Mackenzie cannabis, calling her 'too much of a good girl' when she refuses.
9. Mackenzie storms out, telling Aaron to call her when he wants to be the version of himself who makes her laugh and gives her chocolate — not drugs.
10. Alone in her car, she has the sudden realization: Aaron uses cannabis, cannabis comes from drug dealers, and drug dealers can also source flunitrazepam — the drug that was used to poison the group at the cabin.
11. She drives straight to Blake's house; when he opens the door, she pushes past him and goes directly to his room, announcing 'He uses drugs."
12. Blake responds that cannabis and flunitrazepam are not in the same category, but Mackenzie argues that whoever can get one from a dealer can probably get the other; Blake eventually admits Aaron is now a genuine suspect.
13. The discussion is interrupted when Blake's mother Eloís bursts through the bedroom door sobbing and collapses, announcing that Pete has been killed.
14. Mackenzie holds Eloís as she shakes uncontrollably, while Blake stands frozen and lost; they maneuver Eloís to her room and promise to help her through the loss.
15. In the hallway after settling Eloís, Blake allows Mackenzie to hug him — slowly — and she notes that he has now lost a brother and an uncle while his mother is barely surviving.
16. Back in Blake's room, Blake explains that three murders constitute a serial killer by definition, and raises the possibility that Pete died because he had discovered the killer's identity.
17. Blake admits it is the first time Mackenzie has put herself first by asking 'what if you and I are next?' — noting that previously she always said 'what if all of us are next.'
18. The chapter takes a lighter turn when Mackenzie accuses Blake of only being sarcastic, prompting him to drop his armor and admit plainly: 'Yes, you matter to me. Satisfied?'
19. YA readers who enjoy a slow-burn romance layered into a group-of-friends mystery with escalating stakes will find this chapter satisfying.
20. Listeners unfamiliar with the prior thirteen chapters will be lost among the large cast; this is not an entry-point episode.
