Two girls, two cities, two wars, and a love that refuses to be lost to history. In London in 1940, seventeen-year-old Kit Ashford is trying to survive the Blitz, protect her little brother, and hold on to the boy she may already be losing. In Paris in 1871, Louise-Éloise moves through a city in revolt, tending the wounded and writing letters filled with love, courage, and the dream of a fairer world. When Kit discovers Louise-Éloise's letters in the ruins of a London basement, the words reach across time and change her understanding of fear, sacrifice, and hope. In the middle of destruction and heartbreak, Kit learns that the past can still offer courage and that hope can survive even the fiercest fire. The Lights of London is a luminous historical novel about love, sacrifice, memory, and the brave hearts history leaves behind.