Q: Where can I get it printed?

•Local print shop: Staples, Office Depot, FedEx Office, or The UPS Store all offer spiral binding, usually ready same-day. •At home: if you already have a printer, an affordable comb or spiral binding machine pays for itself after a couple of books. •By mail: if you don't have a printer or a shop nearby, online print-and-bind services will print, bind, and ship the finished book to your door.

Question 1

What paper size should I print it at?

Accepted Answer

US Letter (8.5 x 11 in), portrait. Most print shops and home printers default to this automatically when you print the PDF at 100% scale — if your printer defaults to A4, choose "fit to page" so nothing gets cut off.

Question 2

Should I print in color or black and white?

Accepted Answer

The book is designed in color, but it works great in black and white too if you'd rather keep printing costs down.

Question 3

What kind of binding works best?

Accepted Answer

At 91 pages, spiral binding is the safest bet — it opens flat while he's writing and holds up to repeated use. Comb binding is a close second (and lets you add pages later). Staple/saddle-stitch binding won't hold up at this page count.

Question 4

How much does it cost to print?

Accepted Answer

Roughly $15–30 for a black-and-white spiral-bound copy at most US print shops, depending on location.

Question 5

Where can I get it printed?

Accepted Answer

•Local print shop: Staples, Office Depot, FedEx Office, or The UPS Store all offer spiral binding, usually ready same-day.
•At home: if you already have a printer, an affordable comb or spiral binding machine pays for itself after a couple of books.
•By mail: if you don't have a printer or a shop nearby, online print-and-bind services will print, bind, and ship the finished book to your door.

Question 6

Do I need to print all 90 pages at once?

Accepted Answer

No — some parents print one case at a time so it feels like a new "release" each time he finishes one.

Question 7

Can I just read it on a tablet instead?

Accepted Answer

You can, technically — but we don't recommend it. The whole point is getting him off a screen, not moving the mystery onto a new one.

FROM DOWNLOAD TO REAL BOOK

How It Works

Four steps. No apps, no screen time — just a real book he holds in his hands.

Why We’re Not An App

You could technically open this PDF on a tablet. We won’t pretend otherwise. But that’s not what Keenfold is for — the whole point is getting him off a screen, not moving him to a new one.

Print it, and it becomes exactly what it’s meant to be: a real book, not one more thing glowing on a screen.

Step 1 — Buy & Download

Get instant access to your PDF case files. No shipping, no waiting.

Step 2 — Turn It Into A Real Book

Print it at a local shop, order it online, or bind it at home. Takes minutes, not days.

Step 3 — Hand It Over

No apps, no login, no screen. Just the book.

Step 4 — Let Him Solve The Case

Pencil in hand, clue by clue — this is the part he keeps coming back to.

COMMON QUESTIONS

Prefer to skip printing entirely? The PDF works just as well on a tablet — solve it digitally with the same clues, suspects, and reveal. Here’s how to get the best results either way.

$24 $16