Days of Iron and Clay books in order

Days of Iron and Clay is a fantasy series by Aileen Erin. The series began with Invocation in 2024 and continues with Infestation in 2025.
Series · Fantasy · Paranormal Romance

Reading order

# Title Published Author Buy on Amazon
1 Invocation 2024 Aileen Erin Buy
2 Infestation 2025 Aileen Erin Buy

Days of Iron and Clay is Aileen Erin’s most recent series, starting with Invocation (2024) and continuing with Infestation (2025). The series moves into darker fantasy territory compared to her earlier paranormal romances, dealing with supernatural invocations and their dangerous consequences.

The two-book series so far suggests a more mature direction for Erin’s writing while keeping the strong female protagonists and supernatural world-building that her readers expect.

Frequently Asked Questions

How many books are in the Days of Iron and Clay series?

There are two books in the Days of Iron and Clay series, published between 2024 and 2025.

What is the first book in the Days of Iron and Clay series?

The first book in the Days of Iron and Clay series is Invocation, published in 2024.

What is the Days of Iron and Clay series about?

The Days of Iron and Clay series is Aileen Erin’s newest work, blending fantasy with darker themes. Invocation (2024) and Infestation (2025) begin a story involving supernatural forces and the characters who must confront them.

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