Unicorns of Balinor: Shadows Over Balinor (Book Eight)

A comet is flying towards Balinor. Its light will revive the demon Kraken and unleash evil forces and empower the Shadow Unicorn army.
Princess Arianna, on a quest to find her captured family, must find ways to counter the comet’s power – and in the process, she learns the true identity of her dog Lincoln.