4 books in series

Clockwork Empire

Clockwork Empire is a 4-book series with 4 primary works first released in 2011 with contributions by Steven Harper.

The Doomsday Vault
#1PopularFirst

2011 • 3 Readers • 382 pages • 4

The Impossible Cube
#2

2012 • 1 Reader • 369 pages

The Dragon Men
#3

2012 • 1 Reader • 365 pages

The Havoc Machine
#4

2013 • 1 Reader • 379 pages