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TL;DR: A year after the events of Scythe, Citra has become Scythe Anastasia and gleans with compassion, while Rowan has become a masked vigilante who hunts corrupt Scythes. The Thunderhead, the AI that runs the world, watches but cannot interfere with the Scythedom. As a dangerous new order grows within the Scythes, a teenager named Greyson becomes the Thunderhead's unlikely agent.
Table of Contents
Thunderhead at a Glance
| Author | Neal Shusterman |
| First published | 2018 |
| Type | Dystopian novel |
| Best for | readers who want a thrilling, thought-provoking sequel full of twists |
Thunderhead is the second book in Neal Shusterman's Arc of a Scythe trilogy, published in 2018. It includes passages from the Thunderhead itself. Below you will find a part-by-part summary, five key takeaways, ideas worth remembering and a note on who will enjoy it.
Content note: Includes killing, violence, mass death and political corruption.
Main Characters
- Citra Terranova / Scythe Anastasia: A compassionate Scythe.
- Rowan Damisch: A vigilante who targets corrupt Scythes.
- Greyson Tolliver: A young man chosen by the Thunderhead.
- Scythe Curie: Citra's mentor.
- Scythe Goddard: A cruel Scythe who returns.
What Happens, Part by Part (Contains Spoilers)
The Thunderhead
The Thunderhead reflects on its love for humanity and its rule not to interfere with the Scythedom. It worries about the future. Citra, now Scythe Anastasia, lets the people she must glean choose how they die and gives them a month's notice. Her approach makes her popular but also makes enemies among the “new order” Scythes.
Rowan
Rowan works secretly, killing Scythes who abuse their power. He is hunted by the Scythedom. He knows that he is a criminal, but he believes he is doing what is right. His actions add to the tension in the world.
Greyson
Greyson, who was raised by the Thunderhead, overhears a plot to kill Citra and Curie. The Thunderhead cannot act directly, so it lets Greyson warn them. To work for the Thunderhead, Greyson must become an “Unsavory,” an official rule-breaker, and go undercover. He takes a new name and learns about life outside the rules.
Goddard returns
Rowan is captured. Goddard, believed dead, returns with his head attached to a new body. He takes control of a powerful faction. Citra and Curie learn secrets about the founding Scythes. Citra discovers that a mysterious place, Endura, the floating city of the leaders, holds key answers.
Endura
At Endura, Goddard sinks the city, killing many of the Grandslayers, the top Scythes, and seizing power. Citra and Rowan are trapped together in a vault at the bottom of the sea. Scythe Curie dies. The Thunderhead, horrified, declares all of humanity Unsavory except Greyson, the only person it will now speak to.
5 Key Takeaways
- Compassion can change hard duties.
- Power can be seized through fear.
- AI may struggle with rules it cannot break.
- Vigilantes raise hard questions.
- Systems can collapse quickly.
Ideas Worth Remembering
These are paraphrased, not direct quotes:
- Kindness in hard roles matters.
- Rules are only as strong as those who follow them.
- Silence can be a form of judgment.
Who Should Read Thunderhead?
Read Thunderhead if you enjoyed Scythe and love dystopian stories with big ideas. It suits teens and adults.
About Neal Shusterman
Neal Shusterman (born 1962) is an American author of young adult fiction. The Arc of a Scythe trilogy ends with The Toll, published in 2019. His books often explore ethical questions about technology and society. He has also written screenplays and created television shows.
Questions to Think About After Reading
These prompts work for solo reading, a book club or a classroom discussion of Thunderhead:
- Is Rowan's vigilante work justified?
- Why does the Thunderhead choose Greyson?
- What does the sinking of Endura mean for the world?
How to Use This Summary
Use this page as a quick reference before a book club meeting, an exam, or a decision about whether Thunderhead is worth your time. The takeaways are written to stand on their own. If a point interests you, go back to the book for the author's full story, characters and style, which no short summary can replace.
A Note on Accuracy and Spoilers
This summary is based on the published text of Thunderhead, not on any film, series or stage adaptation, which often change the story. Details are kept at the level of the main events so that nothing is invented. Editions differ slightly in length and wording, so page numbers and small details may vary between copies.
Should You Read the Book?
Yes. Many readers think it is even better than the first book.
Check price of Thunderhead on Amazon
What to Read Next
- The Toll by Neal Shusterman: the final Arc of a Scythe book
- Scythe by Neal Shusterman: the first book in the trilogy
- Red Rising by Pierce Brown: rebellion in a powerful system
Related: Scythe by Neal Shusterman: Summary and Key Takeaways
Frequently Asked Questions
What is Thunderhead about?
Citra and Rowan fight corruption in the Scythedom while the Thunderhead watches.
Who wrote it?
Neal Shusterman, in 2018.
What is the Thunderhead?
An AI that runs the world.
Who is Greyson Tolliver?
A young man who works secretly for the Thunderhead.
What happens to Endura?
Goddard sinks it.
Who dies?
Scythe Curie and many top Scythes.
What is an Unsavory?
A person officially marked as a rule-breaker.
What age is it for?
Teens and adults.
How long is it?
About 500 pages.
Do I need to read Scythe first?
Yes.
Is there a cliffhanger?
Yes, a big one.
What comes next?
The Toll.
Does the Thunderhead narrate?
It shares short reflections between chapters.
Is Thunderhead worth reading?
It depends on what you want. The book is best for readers who want a thrilling, thought-provoking sequel full of twists. If that describes you, it is likely a good fit. If not, the titles under What to Read Next may suit you better.