Ashes to Ashes by Jenny Han

Think Mary, Kat, and Lillia have nothing left to lose? Think again. The fiery conclusion to the Burn for Burn trilogy from New York Times bestselling author Jenny Han and Siobhan Vivian.
They only meant to right the wrongs. It was about getting even. Burn for burn.

But the fire they lit kept raging...Reeve ended up hurt, then Rennie ended up dead.

Everything will turn to ash if they don't stop what they started. But now that Mary knows the truth about what happened to her, will she want to?

Secrets drew Lillia, Kat, and Mary together. The truth might tear them apart.