Kieli (novel) vol. 7: As the Deep Ravine's Wind Howls

When the Corporal's wires get crossed and his memory begins to fail, Harvey and Kieli are forced to temporarily set aside their search for Beatrix to scout for pre-War parts for their afflicted comrade. Along the way, they encounter a strange beast who knows far too much about Undyings and has taken an unsettling interest in Harvey. But it may be a far more mundane menace from Kieli's past that threatens the couple's continuing journey...