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Read it · Crack it · Live it

Books that fight back.

Riddlebound novels hide codes, clues and radio transmissions inside the story. Crack them to unlock what happens next. Or skip ahead and come back. The story never stops for you, but it rewards you for paying attention.

Then he read nine numbers, slow, like a man reading a license plate to someone who has to get it right.

23 · 18 · 9 · 20 · 5 · 9 · 20 · 21 · 16
YOUR ANSWER
How it works

A novel you can solve.

Read

A real novel: characters, twists, cliffhangers. Mysteries, thrillers and sci-fi from Long Light Press.

Crack

Codes, ciphers and clues are part of the story. Solve them in the app, or in the margin of the paperback.

Unlock

Every answer opens a hidden document, a bonus scene or a broadcast. Your case file carries into the next book.

The first three

Coming to Riddlebound

SIGNAL 309 cover: a glowing amber 309 over an AM radio dial
Sci-fi mystery

SIGNAL 309: Something Is Always Paid

Hollis Rook

At 3:09 a.m., a radio station that burned down 39 years ago reads tomorrow's news. Every word comes true. Something always pays.

Coming soon
Dead Man's Switch · Book 106:00
In Case of My Life
Cass Wynter
Techno-thriller

In Case of My Life

Cass Wynter

Every Monday at 6 a.m., an email arrives from her dead mentor. The switch was set to fire only if he was alive. So who's pressing it?

Coming soon
The Sourdough Society · Book 1
The Mother Dough
June Ardell
Cozy mystery

The Mother Dough

June Ardell

Twin sisters inherit a Vermont bakery and a 140-year-old sourdough starter someone will kill for. Grandma's notebook holds the clues. Can you name the killer first?

Coming soon
Start now

Hear SIGNAL 309 tonight.

The audio drama the first book grows out of. Every episode hides a code, and the books pick up where the broadcasts leave off.

Reading a Riddlebound book from a store?

Every code in the ebook and paperback has an address printed under it. Type it in to check your answer.

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