Ghost Hunter is the sixth book in the Chronicles of Ancient Darkness series written by British author Michelle Paver and illustrated by Geoff Taylor.

[1] Ghost Hunter is preceded by Wolf Brother (2004), Spirit Walker (2005), Soul Eater (2006), Outcast (2007), and Oath Breaker (2008), and followed by Viper's Daughter (2020), Skin Taker (2021), and Wolfbane (2022).

However, an eagle owl, controlled by Eostra, attacks the wolves' den and, after killing Darkfur and Shadow, picks Pebble up and flies east, pursued by Wolf.

Wolf draws a pack of the dogs off Torak; he is rescued by Dark, a boy living on the Mountain, who keeps him captive.

The Walker summons the spirits of the Mountain, and Torak shatters Eostra's power; however, she drags him with her into a deep chasm.

The fall almost kills Torak, but Wolf manages to find his souls and push them back into his body, restoring him to life.

"[2] Paver confirmed in her official podcast that the Soul Eater Eostra will be a main character in the book.

[4] The Independent's Christina Hardyment called Ghost Hunter a "thrilling adventure" and highlighted novel's "thoroughly-researched wilderness lore".

Hardyment concluded, "The finale is a climax as intense as Tolkien's fall of Mordor", and noted "Paver succeeds in creating a conclusion with no mawkishness when she resolves the relationship between Torak and Renn – and, of course, Wolf", who she deemed to be "everyone's favourite character".