Question: What is the first book in the prequel series to the four books referred to also as the Predator Cities Quartet by Philip Reeve?
Sentence (from "Mortal Engines Quartet"): The Mortal Engines Quartet is a tetralogy consisting of four novels written by the British author Philip Reeve: "Mortal Engines" (2001), "Predator's Gold" (2003), "Infernal Devices" (2005), and "A Darkling Plain" (2006).
Relevant evidence: Yes