There's trouble at the Castle, and it's all because Merrin Meredith has returned with Darke plans for Septimus. More trouble awaits Septimus and Jenna in the form of Tertius Fume, the ghost of the very first Chief Hermetic Scribe, who is determined to send Septimus on a deadly Queste.
It's winter, and Wolf, Torak's beloved pack-brother, has been captured by an unknown foe. In a desperate bid to rescue him, Torak and Renn must brave the frozen wilderness of the Far North.
