Book 3 "Take the key" Luisa had always thought she was the only nightblood until she met an entire group of them. As a representative for Skaikru, she helps Clarke create peace as the thirteenth clan. When she sees the chance to leave the conclave, she takes it but not just for her people. It was for love. She drowns in the terrors of constant death and she finds out the truth about her origin as they resist the temptations of the City of Light.