Get ready for Onyx Storm with these detailed refreshers from the first two books of the Empyrean series by Rebecca Yarros.

All these guides have spoilers for Fourth Wing and Iron Flame!

Instant download includes printer-friendly versions of:

• Comprehensive study guide

• Start of Onyx Storm character list (through Chapter 9, no spoilers)

• Riders, signets and dragons character list

• Gryphons and fliers character list

• Historical timeline

• World-building topic overviews, including runes and venin