Kass Morgan Books in Order
Kass Morgan has written 7 books, published between 2013 and 2026. The first book is The 100 (2013) and the newest is Royal Summer (2026). Publication order is the reading order below. 4 of the 7 books listed here are in the 100 series, which has its own page: 100 books in order.
- Books
- 7
- Published
- 2013–2026
- Pages on record
- 1,408 in 4 of 7 books
- Reading time
- 23–35 hours
Reading time is an estimate, not a recorded figure: 1,408 pages at 300 words a page, read at 200–300 words a minute, covering the 4 of 7 titles with a page count on record.
Kass Morgan is the pen name of Mallory A. Kass, an American author and editor born in 1984. The 100 (2013) is the work Morgan is known for, a dystopian science fiction series for young adult readers, and it heads a catalogue of 7 books that runs through Day 21 (2014), Homecoming (2015) and Rebellion (2016) to Light Years (2018), Supernova (2019) and Royal Summer (2026). Morgan studied English and History at Brown University and took a master's at Oxford in nineteenth-century literature, works as a senior editor at Scholastic in New York City, and appeared on Jeopardy! in May 2022.
How many Kass Morgan books are there?
Kass Morgan has 7 books, released between 2013 and 2026. They include 2 series and 1 title listed outside any series.
Kass Morgan Books in Publication Order
The table lists all 7 Kass Morgan books in the order they were published, with the release year, the page count where one is on record, and how many independent book listings confirm each title. Catalogue data as of September 2026.
- 12013–2/4
- 220143112/4
- 320153522/4
- 42016–2/4
- 520183772/4
- 620193682/4
- 7Royal Summer2026 · confirmed 2/42026–2/4
Kass Morgan series in order
The series linked below has its own reading-order page.
- 100 books in order 4 books
Kass Morgan books grouped by series
Each title below is a row in the publication-order table above. None of these groups has a reading-order page of its own on this site.
Light Years in order
2 books- 1. Light Years
- 2. Supernova
Standalone books
1 book1 Kass Morgan title here is not listed as part of any series.
Do you have to read Kass Morgan books in order?
You only need to read Kass Morgan books in order within each series: the books listed here span 2 separate series, and each series has its own publication order.
Where to start with Kass Morgan
Start with The 100 (2013), the first 100 book. It is also the earliest catalogued title.
What is the newest Kass Morgan book?
Royal Summer (2026) is the newest Kass Morgan book released so far.
Is there a new Kass Morgan book coming?
No next Kass Morgan book is announced in the catalogue, which is a gap in the listings it merges rather than a sign that the run has ended.
Kass Morgan at a glance
- Still publishing
- Kass Morgan published a book as recently as 2026.
- Release pace
- Kass Morgan books have appeared about one every 2 years on average.
- Length
- 1,408 pages across the 4 of 7 books with a recorded length, a median of 360 pages each.
- Busiest decade
- Most Kass Morgan books, 6 of 7, were published in the 2010s.
What the Kass Morgan books are about
5 of the 7 Kass Morgan books carry subject tags in Open Library's catalogue. The subjects below are the ones that recur across them, most frequent first: science fiction is tagged on 5 of 5. The subjects are cataloguers’ headings, not a plot summary.
- Science fiction 5 of 5 books
- Children's fiction 3 of 5 books
- Survival 3 of 5 books
- Juvenile delinquents 2 of 5 books
- Schools 2 of 5 books
- Space stations 2 of 5 books
- Cooperativeness 1 of 5 books
- Cults 1 of 5 books
- Fantasy, paranormal 1 of 5 books
- Military education 1 of 5 books
- Prejudices 1 of 5 books