In We Were Liars , no one else directly “hurts” Cadence on purpose; her injury is the result of the fire she and the other Liars start at Clairmont and the subsequent explosion that throws her into the water and causes her head trauma.

What actually happens to Cadence

  • Cadence and the other Liars decide to burn down Clairmont as a protest against their toxic, money-obsessed family.
  • During the arson, the fire spreads far faster than they planned, trapping Johnny and Mirren inside, while Gat runs back in trying to help.
  • As Cadence runs toward the beach, a gas line/main explodes, hurling her into the ocean and slamming her head against the rocks, which causes her brain injury, memory loss, and later migraines.

So, physically, Cadence is hurt by the explosion and the impact with the rocks, not by another character attacking her.

Who is “responsible” for her injury?

Different ways to look at “who hurt Cadence in We Were Liars ”:

  • Direct cause :
    • The gas explosion and impact with the rocks injure her head.
  • Human responsibility inside the story :
    • Cadence herself, plus Mirren, Johnny, and Gat, all chose to set the fire, which led to the explosion and her accident.
* In that sense, Cadence feels that she “hurt herself” through her own choices, especially because she believes her delay and actions also contributed to the others’ deaths.
  • Emotional/psychological harm :
    • The Sinclair family’s racism, classism, and constant conflict push the Liars to the drastic plan in the first place, so the adults’ toxicity indirectly “hurts” her by creating the conditions for the tragedy.

Book vs. show (same core answer)

  • In both the novel and the recent TV adaptation, the twist is that Cadence was part of the group that burned Clairmont and that the fatal fire and explosion caused her injuries and the others’ deaths.
  • The show visualizes it more explicitly: she runs out, the house detonates, she’s blasted into the water, and that impact leads to her traumatic brain injury and amnesia.

Why readers ask this question a lot

  • Much of the story is told through Cadence’s fragmented memory and unreliable narration, so early on it seems like there might be a mysterious attacker or incident that “hurt” her.
  • Later, when all the pieces come together, it’s clear that:
    • No family member beats or attacks her.
    • The “villain” is a mix of the Sinclair family’s dysfunction and the unintended consequences of the Liars’ own plan.

TL;DR: Cadence is hurt by the explosion from the fire she helps start at Clairmont, which throws her into the water and causes her head injury; no one physically assaults her, but she and the other Liars — shaped by their family’s toxicity — are ultimately the ones whose choices lead to her being hurt.

Information gathered from public forums or data available on the internet and portrayed here.