Nearly 500 years have passed since humans landed on Pern, and, according to their records, another fall of deadly Thread, a lethal rain of spores from space, is only a few years away. As young Kindan struggles with his studies at Harper Hall and sets his sights on becoming harper to the dragonriders of Benden Weyr, he and his friends become aware of a mysterious and usually fatal plague infecting the holds of Pern. Despite their own vulnerability, the apprentice harpers and healers battle against time to find a cure before the sickness spreads to the dragonriders. In their third collaborative effort (after Dragon's Kinand Dragon's Fire), McCaffrey and her son Todd delve into Pern's early years as they continue the story of Kindan, whose talent with the dragon kin of Pern has brought him to the attention of holders, harpers, and dragonriders. Strong storytelling and compelling drama, along with memorable characters, make this essential for any library patronized by fans of Pern and its dragons.