New books · Author
Riley Sager's new book, next release date and all books in order
Quick answer
Riley Sager's newest book is The Unknown, released August 4, 2026. No Riley Sager book has been announced after The Unknown.
Riley Sager writes suspense novels including Final Girls, The House Across the Lake and Middle of the Night.
Checked Friday, October 9, 2026
Latest Riley Sager book
- The Unknown · August 4, 2026
A dual-timeline thriller about five women who vanished from a remote Vermont island in 1926.
All Riley Sager books in order
14 books, grouped by series, in reading order. Tick the ones you've read; your list is saved in this browser.
As Riley Sager
Kat Campbell series
As Alan Finn
Book list from Wikipedia (CC BY-SA), checked Friday, October 9, 2026.
Common questions
What is Riley Sager's new book?
Riley Sager's newest book is The Unknown, released August 4, 2026. No Riley Sager book has been announced after The Unknown.
Is Riley Sager releasing a new book?
No Riley Sager book has been announced after The Unknown.
What was Riley Sager's last book?
The Unknown, published August 4, 2026.
What order should I read Riley Sager's books in?
As Riley Sager: start with Final Girls (2017). Kat Campbell series: start with Death Notice (2010). As Alan Finn: start with Things Half in Shadow (2014). The full list in order is on this page.
How many books has Riley Sager written?
We list 14 Riley Sager books, including those announced but not yet published.