The night the lights went out, I lost my sister.I was twelve, kneeling in a pile of copper wire, when the world simply stopped.No flicker. No warning.The lanterns died like birds falling out of the sky.And a mile away, in the dark, Lenny screamed my name once and then went silent.I have spent four years learning to live in the after.Four years of curfews and ration lines and rules made by people who want the rest of us scared.I scavenge dead radios for parts that no longer matter.I keep my head down and my mouth shut.And every night I tell myself the lie that kept me breathing: that what happened to Lenny was not my fault.Then a boy I barely trust shows me something impossible.A signal.A single thread of sound bleeding out of a skeletal tower that glows electric blue against a bruised sky.Someone out there is still broadcasting.And the voice on the other end knows my name.Crossing the dust means leaving the only safe walls I have.It means trusting three misfits who have every reason to leave me behind.It means walking straight toward the people who took the power, and the children, and the truth."If we go," he says, "there's no signal strong enough to call us back."I have spent four years being careful.Careful kept me alive. Careful also kept me a coward.I am done waiting in the silence for someone to save us.If the last signal is real, I will follow it to the end of the dark.Even if the end of the dark is where I finally learn what really happened to my sister.Even if the truth is the one thing I've been most afraid to hear.The Last Signal is a tense, big-hearted YA post-apocalyptic adventure about an unlikely friendship, survival after the lights go out, found family, buried guilt, first love, and the courage it takes to hope.Perfect for readers who love post-apocalyptic survival, brave heroines, slow-burn friendship-to-trust, found-family road trips, and coming-of-age stories with heart. A standalone YA adventure with a hard-won, hopeful ending.