Christmas Elimination Puzzle Designer

I’m looking for an experienced puzzle book writer/designer to help develop a commercially appealing elimination-style mystery puzzle book. The project will require designing a large suspect pool, a clear elimination system, varied clue types, escalating difficulty, and a satisfying final deduction. The puzzle must be logically airtight, fair to the reader, and have one provably correct solution. Experience with logic puzzles, deduction games, elimination puzzles, mystery books, escape-room puzzles, or similar projects is strongly preferred. Please send relevant examples of puzzle books, games, or mystery projects you’ve created, along with a brief explanation of your role in developing the puzzle mechanics.