
The Mortal Engines Quartet, also known as the Predator Cities Quartet, is a series of epic young adult fantasy novels by the British novelist and illustrator Philip Reeve. He began the first volume of the series, Mortal Engines, in the 1980s, and it was published in 2001. Reeve then published three further novels, Predator's Gold in 2003, Infernal Devices in 2005, and A Darkling Plain in 2006. The series is set thousands of years in the future in a time known as the Traction Era, and tell the story of two young adventurers on a desolate planet Earth where moving cities roam for resources, eating each other. The novels have won a number of awards, including the Nestlé Smarties Book Prize in 2002 for Mortal Engines and the 2006 Guardian Children's Fiction Prize and the 2007 Los Angeles Times Book Prize for Young Adult Fiction for A Darkling Plain.
A Darkling Plain is the fourth and final novel in the Mortal Engines Quartet series, written by British author Philip Reeve.

Fever Crumb is a young adult post-apocalyptic science fiction novel by Philip Reeve, published in 2009. The first in a series, it is followed by A Web of Air in 2010 and Scrivener's Moon in 2011. The books of the Fever Crumb series are prequels to the Mortal Engines Quartet series of novels by the same author.

Infernal Devices is the third of four novels in Philip Reeve's children's series, the Mortal Engines Quartet.

Mortal Engines is a young-adult science fantasy novel by Philip Reeve, published by Scholastic UK in 2001. The book focuses on a futuristic, steampunk version of London, now a giant machine striving to survive on a world running out of resources.

Mortal Engines is a 2018 steampunk film directed by Christian Rivers and with a screenplay by Fran Walsh, Philippa Boyens, and Peter Jackson, based on the 2001 novel of the same name by Philip Reeve, and starring Hera Hilmar, Robert Sheehan, Hugo Weaving, Jihae, Ronan Raftery, Leila George, Patrick Malahide, Regé Jean Page and Stephen Lang. An American–New Zealand co-production, the film is set in a post-apocalyptic world where entire cities have been mounted on wheels and motorised, and practice municipal Darwinism; its movie universe is different from that of the books.
Predator's Gold, the second book in the Mortal Engines Quartet series, is a young-adult science fiction fantasy novel written by Philip Reeve and published in 2003. In the book, Tom and Hester stumble across the ice raft of Anchorage.

Scrivener's Moon is the sequel to A Web of Air, and the third book in the Fever Crumb trilogy, the prequel series to Mortal Engines Quartet. It was released on 4 April 2011.

A Web of Air is a young adult post-apocalyptic science fiction novel by Philip Reeve. It is the second book in the Fever Crumb prequel series to Mortal Engines Quartet. It was published on 5 April 2010.