Tracker is a hunter, known in the thirteen kingdoms as one who has a nose - and he always works alone. But he breaks this rule when he joins a band seeking a lost child. His companions are strange and dangerous, from a giant to a witch to a shape-shifting Leopard, and each hides their own secrets.
As they follow the boy's scent from perfumed citadels to infested rivers to enchanted darklands, set upon by murderous foes, Tracker wonders: who really is this mysterious boy? Why don't people want him found? And, crucially, who is telling the truth and who is lying?