Killer Letters Vol. 6

UPDATED EDITION: You asked, we listened. Every puzzle now prints 20% larger than in earlier copies.

Choose your print size

Regular Print — the classic 6″ × 9″ paperback. Slips into a tote bag, perfect for the armchair, the train, or the café table. $9.99

Large Print — a generous 8.3″ × 11.7″ edition with oversized grids and big, easy-read type. Roomier puzzles for relaxed, comfortable solving. $14.99

Last file. Last grid. Last chance.

Six volumes. Hundreds of cases. Countless circled words.

Every victim named. Every weapon traced. Every killer found.

Almost.

Because the case that started in the first drawer has never really closed. It has been moving underneath everything, hidden between puzzles, threaded through clues, waiting for the one solver who would follow it all the way to the end.

Now the final volume brings every pattern into focus.

You know how the system works. You know what to look for. You know better than Cole Case ever did that the smallest leftover letters can change the whole investigation.

Solve the cases.

Then solve the one case that was never supposed to be found.

100 solvable cases. Full answer key included. One ending six volumes in the making.

Find the words. Catch the killer. Close the case.

Want the whole drawer? Get all six in the Complete Case and save.

A note on shipping: Every book is printed in and shipped from your own country, whether you're in the US, Canada, Australia, or the UK. That means no customs fees, no international shipping, and no surprise charges at your door. Postal rates in some countries (looking at you, Canada and Australia) can run higher than any of us would like, but what you see at checkout is truly all you'll pay. If the shipping on your order feels steep, you can also find our books on your local Amazon, where shipping may work out cheaper overall. We'd rather you get your puzzles than have shipping stand in the way.