K. B. Spangler’s 2015 Greek Key sends a trio of odd characters on a quest to discover the origins of the Antikythera Mechanism (a real-world artefact that featured in a subplot of an earlier Spangler book, State Machine). The cast of characters includes:
- Mike Reilly, the World’s Worst Psychic,
- Hope Blackwell, World’s Second Worst Psychic, previously met in A Girl and Her Fed),
- and a talking koala named Speedy.
Hope is well connected, rich thanks to her connections and a talented martial artist. She has one quirky ability that makes her particularly useful when it comes to tracking down the origins of an ancient, technologically anomalous device: Hope can talk to ghosts.