Book Review: Obsidio by Amie Kaufman & Jay Kristoff

Title: Obsidio by Amie Kaufman & Jay Kristoff
Publisher: Random House Australia
Publication Date: March 13th 2018
Genre: Science Fiction / Young Adult

Kady, Ezra, Hanna, and Nik narrowly escaped with their lives from the attacks on Heimdall station and now find themselves crammed with 2,000 refugees on the container ship, Mao. With the jump station destroyed and their resources scarce, the only option is to return to Kerenza—but who knows what they’ll find seven months after the invasion?

Meanwhile, Kady’s cousin, Asha, survived the initial BeiTech assault and has joined Kerenza’s ragtag underground resistance. When Rhys—an old flame from Asha’s past—reappears on Kerenza, the two find themselves on opposite sides of the conflict.

With time running out, a final battle will be waged on land and in space, heroes will fall, and hearts will be broken.


Obsidio is Book 3 of the Illuminae Files. As with Illuminae (Book 1) and Gemina (Book 2), Obsidio is told through a series of emails, instant messages, schematics, classified files, and transcripts, provided as evidence in court proceedings against BeiTech. This story is a little more involved than the previous two, having to tie all the lose ends together as well as cover what’s happening in space in addition to what’s happening on Kerenza. It is an ambitious novel/series for the young adult genre in both content and page number.

All the surviving characters from the first two novels return in Obsidio, in addition to the new characters introduced on Kerenza. I understood Asha and Rhys’ hesitation with one another, and loved the twist of them being on opposite sides of the conflict. However, the distrust between Asha and Rhys transferred off the page, and I didn’t feel all that invested in their relationship as a result. I really enjoyed seeing the friendships form between different characters from the previous two books, and how those were used to great effect in each of the storylines. Nik is still my favourite character by far, and I’m sure his sense of humour plays a big part of that.

The plot of Obsidio is fantastic. There is never-ending tension for those on board the Mao, for those on Kerenza, and also for the reader. This is one of those novels where I don’t even bother trying to guess what happens, because I’m usually wrong – the best kind of story. The ending was perfection.

The Illuminae Files ranks as one of my favourite series. It’s YA and Sci-Fi and is one of the most inventive and ambitious series I’ve read, so it gets extra points. If you haven’t picked up a copy of the first two books, I highly recommend you read them before reading Obsidio. You won’t be disappointed.