Betrothed books in order

Kiera Cass's standalone novels include The Siren and A Thousand Heartbeats, romantic fantasies separate from The Selection series.

Reading order

# Title Published Author Buy on Amazon
1 The Siren 2009 Kiera Cass Buy
2 A Thousand Heartbeats 2022 Kiera Cass Buy

These are Kiera Cass’s standalone novels outside The Selection series. Each tells a complete story with its own characters and world.

The Siren was originally self-published in 2009 when Cass was still building her audience. After The Selection’s success, HarperCollins published a revised version in 2016. It follows Kahlen, a girl who serves the Ocean as a siren, luring sailors to their deaths.

A Thousand Heartbeats (2022) is Cass’s most recent standalone, a romantic fantasy about a princess and a mysterious commoner.

Frequently Asked Questions

Are these books connected to The Selection series?

No. The Siren and A Thousand Heartbeats are standalone novels, completely separate from The Selection universe.

What is The Siren about?

The Siren follows Kahlen, who serves the Ocean as a siren, luring ships to their doom. When she falls for a human, she must choose between her duty and her heart. Cass originally self-published it in 2009 and rewrote it for HarperCollins in 2016.

Do I need to read these books in order?

No. Each book is a complete standalone story with different characters and settings.

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