CASE
Achievement · 01
Cases solved
One badge per case Iris closes. Hemlock Island. The Mansion. The Mayan UFO. Trade them at the back of the book.
New series · Spring 2026 · Ages 10–13
Meet Iris Blackwood, Detective.
An interactive mystery adventure where you decide what Iris notices, who she trusts, and which lead she follows. Every choice changes the case. Three books, one detective, hundreds of ways to crack it.
§ How it works
You read. You choose. The case changes.
Every IF/THEN book is a real novel with branching paths built in. Read forward, make a choice, the story remembers. Some endings reward you with a solved case. Others leave the case open, and Iris remembers, too, in the next book.
One case. Many ways through.
An IF/THEN book is structured like a map, not a hallway. Every chapter ends with a real choice, not a fake one. The choices change the story in ways that compound: who Iris trusts in chapter three changes who'll talk to her in chapter nine.
Each book has multiple full endings. Some are wins. Some are honest losses. Some unlock achievements that carry into the next book in the series.
Reading time is roughly 4–6 hours per path. Most readers play through twice or three times to see how the case could have gone differently.
IF
you search the boathouse
→
you find the torn page.
IF
you confront the caretaker
→
he tells you about the storm.
IF
you stay quiet
→
he watches you for the rest of the week.
IF
you skip the boathouse
→
you arrive at the lighthouse at dusk alone.
IF
you climb the stairs
→
the case ends differently.
A sample branch from Book One
§ What you earn
Solve cases. Earn the rank.
Every IF/THEN book includes an achievement system: case files you can collect, ranks you can earn, secret endings you can unlock by playing differently. Carry them forward in the series.
CLUE
Achievement · 02
Evidence collected
Hidden clues across each book. Some are obvious. Most aren't. Collect all of them and the final chapter reads differently.
JR
Achievement · 03
Detective rank
Junior, Senior, Lead. Your rank carries from book to book. Higher ranks unlock tougher cases, and the option to disagree with Iris herself.
★
Achievement · 04
Secret endings
Three to five hidden endings per book. Reach them by playing differently than you did the first time. Most readers find one. A few find them all.
§ The catalog
One detective. And the world around her.
Iris Blackwood leads the imprint. Two more lines sit alongside her, different ages, different genres, the same branching form.
01
Line 01 · Lead title
Iris Blackwood Detective Mysteries
An interactive mystery adventure series for young readers ages 9–13. A young detective, real cases, hundreds of ways through each book. Genre-grounded, character-driven, achievement-tracked.
Browse the series →02
Line 02
The UBU Adventure Series
Interactive fiction for older readers. Crosses genres freely: sci-fi, horror, western, literary. The format is the same; the stakes are higher, the characters more complex, the moral terrain less certain. Ages 14–17.
03
Line 03
The Classic Adventure Line
Public-domain classics rebuilt as interactive fiction. The source material you know; the branching paths you don't. Ages 10–13.
§ For grownups
Books worth handing over.
If you're the parent, grandparent, teacher, or librarian doing the buying, here's what's actually in your hand.
- Real, full-length novels, not gimmicks. 170-220 pages, age-appropriate, genre-grounded.
- Mystery and detection as the form. No violence beyond PG, no chase-novel cheap thrills.
- Choices that teach consequence, not just thrill. Decisions matter, and the story remembers.
- An achievement system that gets reluctant readers reading, and reading again.
- Print-first paperback, $12.99. Bulk discounts up to 40% for classrooms and libraries.
- School and library ordering →
Three books. One detective. Your turn to read.
Start Book One →
Chad Prevost
Books
IF/THEN Books
The Descent