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The ciphers here are genuinely tricky but fair—I got properly stuck on the coded message in Chapter 4 and felt like a real detective when it clicked. Michelle Gray’s case files make it easy to keep flipping pages for one more puzzle.

I was skeptical about a puzzle book that claims to train detective skills, but the code and cipher sections genuinely made me feel like I was cracking a real case. The progression from simple substitution ciphers to trickier logic puzzles kept me up way past my bedtime.

The code-breaking puzzles had me hooked for hours—the way each cipher builds on the last really makes you feel like you're training to be a detective. I’m only halfway through, but Michelle Gray’s notes add a fun story layer that keeps me coming back.