The Borrowed Light is the story of a fifteen-year-old girl who has spent her life learning not to want too much, because every time she does, something is taken away. When Poppy discovers a boarded shed behind her family's newest rental home - and a glass block that glows with impossible, comforting warmth - she finds what feels like safety for the first time. But the more the light protects her from loneliness, the more it steals from the people and memories that tether her to real life, until friendship and love become dangerous things to feel. With the quiet strength of a girl who has run out of places to hide, Poppy must decide whether numbness is worth the price of losing herself - and whether she is brave enough to stay when every instinct tells her to disappear.