by R.N. Swann
Release Date: May 26, 2026
2026 Viking Books for Young Readers
Ebook ARC; 400 Pages
ISBN: 978-0593695333
ASIN:
B0FNVY6N8V
Audiobook: B0GR8CP6MK
Genre: Fiction / YA / Mystery
Source: Review copy from publisher
4 / 5 Stars
Summary
Seventeen-year-old Fenny Allen has been Sarah
Vincenty's sidekick for as long as she can remember, ever since the two
of them solved the mystery of the stolen library books back in
elementary school. Over the years, Sarah has ruffled a few feathers in
their small town, building a reputation as both an amateur detective and
a vigilante who has dispensed her own form of justice.
Now Sarah is missing. The police have written her off as yet another teen runaway, but Fenny is convinced that something more sinister has happened. When she discovers a binder Sarah left behind entitled In Case I Go Missing, Fenny learns that at the time of her disappearance, Sarah was investigating her biggest case yet.
Fenny knows that it's up to her to finish what Sarah had begun. As she and her friend Sam piece together the clues that Sarah left for them, they find themselves up against a decades-old mystery—one that links to the town's dark history. But is this binder a guide to finding Sarah—or are Fenny and Sam already too late?
Now Sarah is missing. The police have written her off as yet another teen runaway, but Fenny is convinced that something more sinister has happened. When she discovers a binder Sarah left behind entitled In Case I Go Missing, Fenny learns that at the time of her disappearance, Sarah was investigating her biggest case yet.
Fenny knows that it's up to her to finish what Sarah had begun. As she and her friend Sam piece together the clues that Sarah left for them, they find themselves up against a decades-old mystery—one that links to the town's dark history. But is this binder a guide to finding Sarah—or are Fenny and Sam already too late?
My Thoughts
In Case I Go Missing was an intriguing YA mystery that focused on the disappearance of a friend as the other two friends in their friend group learn she was secretly investigating a case on her own. This book had quite a few twists and turns, but what intrigued me the most was the effect Sarah's disappearance had on the friendship of the two left behind and how it affected them going forward. Yes, there were a lot of secrets exposed in the town and the investigation was interesting, but I really enjoyed the human element behind Sarah's disappearance and how everyone reacted to it.
The story is told from Fenny's POV, but this is one time I wish we also had Sam's POV as I found his character to be quite as interesting as Fenny's and would have loved knowing his thoughts and insights. Fenny was quite capable and very determined to find out what happened to her friend, but I also loved how she wasn't reckless or stupid in her investigation, knowing when to keep her counsel, when to get the police involved and not keep clues to herself, and being smart. I really enjoyed the relationship between Fenny and Sam and am so, so, so glad the author didn't make their relationship a romantic one, but stuck to a platonic one as it would have felt so out of context for the story. Both of them had major struggles going on and I am glad the author didn't ignore those struggles and took the time to focus on them and intertwine them with Sarah's investigation.
I became quite invested in this investigation and I have to credit the author's writing style for that. It was definitely a suspenseful murder mystery, but it was so much more than that as the clues Sarah left behind for Sam and Fenny allowed the author to reflect on the power of friendship and how well friends can really know each other. This shone through the events and gave Fenny and Sam purpose as they found clues that only they would recognize and understood that Sarah was not necessarily ignoring them, but protecting them. I did suspect quite early on what had happened, but that was okay. The author kept the tension high from pretty much the first page of the book and didn't let you relax until the last page and managed to pull all the different threads floating around into one interesting ending. It might seem a bit chaotic at times, but upon reflection, there was purpose behind everything in this book. There were multiple themes running through this book; loyalty, friendship, the unraveling of family legacy and secrets, neglect, murder, trust, the conflict between justice and revenge, loneliness, death, and the list goes on.
Verdict
In Case I Go Missing was an unpredictable book and I was not sure in which direction it was going for most of it, but at the same time this was an accessible book and definitely written with the YA audience in mind. Both the plot and character development were good, and the tension never really let up right from the first page. Yes, naturally there were some cliche moments and there were some tropes used, but they didn't interfere with the scope of the story nor did they interfere with the twists and turns of the story. I would highly recommend this book to anyone looking for a tension-filled mystery and I am looking forward to reading more works by this author.








