WELCOME TO COLDWATER. POPULATION: DROPPING. The pie is good. The porches are wide. The neighbors all wave. There is just one small problem. Visitors keep turning up dead. A salesman in the diner. A critic at the hotel. An auditor at the bottom of the town hall stairs. Fifty visitors, fifty crimes — and every single time, the culprit is one of the same twenty smiling residents you will come to know very, very well. Detective Ambrose Flint has been assigned to clean up this town. He needs a partner with a sharp pencil and a sharper mind. That would be you. Every case hands you the suspects, the weapons, the rooms, and the clues. You answer three questions: WHO did it, WHAT they used, and WHERE each suspect was standing when it happened. No guessing is ever required. No case has more than one answer. That is a promise. Study the suspects. Read the clues. Fill the grid. Make your accusation. WHAT'S INSIDE 50 original whodunit logic puzzles, each a self-contained murder with a single provable solution Five escalating parts — early cases open with three suspects and a handful of direct clues; later cases widen to four suspects and chains of indirect deductions that force you to work sideways A recurring cast of 20 Coldwater residents, each with a height, an eye colour, a handedness and a reason to lie — the details you'll need to break the hardest clues A full deduction grid printed with every case Complete solutions section revealing not just the killer, but where every suspect stood and what they were holding A step-by-step tutorial for readers new to logic grids — no prior experience needed Three free bonus ebooks waiting at the back PRAISE FOR DR. RABEA HADI'S LOGIC PUZZLE BOOKS "It's great how the puzzles start easy and get progressively harder as you go along. I recommend for anyone that wants to exercise their brain." ★★★★★ PERFECT FOR FANS OF Classic deduction-grid puzzle collections · Cluedo and country-house whodunits · Golden Age detective fiction in the Agatha Christie tradition · Cozy small-town mysteries where everyone has a secret · Sudoku, cryptic crosswords and anything else that rewards a stubborn mind Ideal for long flights, quiet evenings, waiting rooms, and anyone looking to trade half an hour of screen time for something that actually makes them think. ABOUT THE AUTHOR Dr. Rabea Hadi is a board-certified family physician who has spent a career reading people for a living — reading what patients say, what they don't say, and what the gap between the two reveals. That's the same skill a good detective needs, and it's the one this book may train. Under the Choose Your Quest banner he has written interactive gamebooks, fact collections and puzzle books read in dozens of countries. Coldwater is one of his darkest town yet. Solve three free cases at ChooseYourQuest.net/Killer.