Every witness knows something. Not every witness is right.

Eleanor Hartley left her office on an ordinary Tuesday and never came home. Forty-eight people crossed her path that day. Not one of them knew they were a witness.

Each of those forty-eight people is one puzzle in this book.

Solve a sudoku. Decode the answer. Use it to unlock a crossword. Search for the hidden words — and discover, letter by letter, what that witness saw and which witness to interview next.

This is not a puzzle book you solve in order. It is a puzzle book that tells you the order. One hidden message at a time, in no particular sequence, exactly like a real investigation.

Along the way the accounts start to disagree. Was her jacket red, or was it tan? Was she carrying a box, or a bag? Only some of what you are told is true. Cross out what does not hold up, and the case comes together.

WHAT IS INSIDE

• 816 clues hidden across 145 puzzles
• 48 witnesses — every one a complete sudoku, crossword and word search
• 22 locations, 8 times of day, and one final elimination grid
• 7 accounts that contradict each other — find them, or the trail goes cold
• Full answer keys for every puzzle, one page per witness
• Large 8.5 x 11 pages with room to work

TWO THINGS ON EVERY CASE NOTES PAGE

Between the puzzles, each of the 48 Case Notes pages carries a Sudoku Solving Tip — real technique, not filler, building from basics to the methods that crack the hardest grids. Work the book front to back and you will finish a better solver than you started.

Each one also carries a Did You Know — a short, factual note about how missing person cases actually work. There is no nationwide waiting period. You can report someone missing immediately. Small things worth knowing, quietly threaded through a book about somebody who vanished.

SOLUTIONS — AND WHY SOME OF THEM ARE NOT PRINTED

Every one of the 48 puzzles has a full answer key in the back of the book — sudoku, crossword and word search, one page per witness. Check your work whenever you like.

The case solutions are deliberately not in these pages. The Elimination Grid answer, the full witness solve order, the Where She Was Seen key, the How She Seemed page and the final reveal all sit behind QR codes instead. In a book that builds to a single answer, one accidental glance at the wrong page ends the whole case. Scan them when you are ready — not before.

WHY THIS ONE IS DIFFERENT

Most variety puzzle books are a bag of unrelated puzzles you can work in any order. This one is a single connected case. Every answer points to the next puzzle, and all 145 resolve to one place on one grid — the only location no witness ever named.

There is no guessing. There is no luck. Everything you need is printed somewhere in these pages, and most people are weaker at one of the three puzzle types than they think.

FOR SOLVERS WHO CAN HANDLE ALL THREE. If you have ever finished a book of Sudoku and wished it added up to something, this is that book.

Forty-eight witnesses. One case. Only the leftovers will tell you where she went.

HOW LONG IT TAKES: Each witness is a full Sudoku, a full crossword, and a full word search, so plan on a solid sitting per puzzle. Forty-eight of them, plus the final elimination, are weeks of solving — not an afternoon.

Volume One of The Puzzle Master's Casebook. A fresh case, a new town, and forty-eight new witnesses in every volume.

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