The whole book, Cadence is convinced she had a terrible accident. She thinks she hit her head and that’s why she can’t remember the summer she was fifteen. We, the readers, are trapped in her fuzzy, painkiller-addled brain. It feels like a mystery about a head injury.
But it’s not. It’s a mystery about a fire. And a fight. And a terrible, irreversible decision.
Here’s the thing—Cadence didn’t just bump her head. She swam to the island the night of the fire. She pulled her friends out of the burning house. She stood on the lawn with them, watching everything burn. And then, she let go.
How the Accident Actually Happened
When Cadence finally remembers the full sequence, it’s gut-wrenching. The four of them—the Liars—had argued with the aunts about the family money. Gat, Johnny, and Mirren were furious at the greed. They decided to burn down the main house, Clairmont, to force a clean start. It was a stupid, impulsive teenage idea.
We Were Liars: Who All Die When Cady Burns Down the House?
But the fire got out of control. The house collapsed. Cadence tried to save Gat, but the roof gave way. She dragged his body from the wreckage, but he was already gone. She found Johnny and Mirren nearby, also dead. The smoke inhalation did them in.
So, the physical answer? Johnny dies. Mirren dies. Gat dies. All three of them. Cadence survives, but with severe brain damage and a broken hip. Her body remembers, even if her mind won’t for two years.