Carlo is a teenager who happens to be hearing-impaired and can see only out of one eye. Now that eye is failing, and Carlo must have an operation to try to save his vision. His fierce and funny sister Emma, Carlo's closest companion, begins writing poems that express the fear she works hard to hide, while his seeing-eye dog Lul remains steadfastly at his side. But even with the support and affection of his family, how can Carlo face such uncertainty? And what will happen if he can no longer communicate with them? Before Nightfall is a book about trust, imagination, empathy, and language, narrated through the poems Emma types and through prose passages told from multiple perspectives and illustrated with the ASL alphabet, drawn by the Italian artist Sualzo. Despite the immense challenges Carlo and Emma face, their story is one of hope and wonder.