-
Your next favorite book
is waiting.
Zen and Xander are sisters - truly, madly, deeply sisters, and this is their last summer together.
Zen is the "good" girl with a black belt in karate and a newfound penchant for kicking heads. Xander is a wild scientific genius with a self-destructive streak a light-year long. They have three things in common: they’re brown-eyed blondes, they’ve noticed the boy next door has turned into a hottie, and they miss their mom, who died almost a year ago.
These sisters are surviving just fine - except Zen keeps getting into fights that are harder and harder to finish, while Xander spirals into a vortex of late-night parties, scary men, and drugs. What’s worse, Xander has scholarships to the most coveted universities in the country, but she’s about to ruin everything. Should Zen keep trying to protect Xander, or finally let her go?
"Vivid emotions and unexpected events keep the reader engaged as the characters grow and find a way back to themselves."--Booklist
"The themes of the negative influences of drugs and alcohol never overpower the story; instead, the focus remains tightly on two young women at a sensitive time in their lives." - School Library Journal
"Starred Review. Zen's frank narration-full of longing and hard-won insight-draws readers in and won't let go." - Kirkus Reviews
This information about Zen and Xander Undone was first featured
in "The BookBrowse Review" - BookBrowse's membership magazine, and in our weekly "Publishing This Week" newsletter. Publication information is for the USA, and (unless stated otherwise) represents the first print edition. The reviews are necessarily limited to those that were available to us ahead of publication. If you are the publisher or author and feel that they do not properly reflect the range of media opinion now available, send us a message with the mainstream reviews that you would like to see added.
Any "Author Information" displayed below reflects the author's biography at the time this particular book was published.
Amy Kathleen Ryan earned an M.A. in English literature and graduated from the New School Creative Writing for Children Program. She now lives with her family in Colorado.
If you liked Zen and Xander Undone, try these:
by Denne Michele. Norris
Published 2026
In this heart-wrenching debut novel, a young Black gay man reckoning with the death of his father must confront his painful past—and his deepest desires around gender, love, and sex.
by Allen Bratton
Published 2025
Crackling with intelligence and wit, Henry Henry is a brilliant recasting of the Henriad in which Hal Lancaster is a queer protagonist for a new era.
by Nicole Cuffy
Published 2024
A provocative and lyrical debut novel follows a trailblazing Black ballerina who must reconcile the ever-rising stakes of her grueling career with difficult questions of love, loss, and her journey to self-liberation, from a sensuous new voice in fiction.
The most successful people are those who are good at plan B
Click Here to find out who said this, as well as discovering other famous literary quotes!
Can you name the title?
Test your book knowledge with our daily trivia challenge!
Your guide toexceptional books
BookBrowse seeks out and recommends the best in contemporary fiction and nonfiction—books that not only engage and entertain but also deepen our understanding of ourselves and the world around us.
