I loved this book though it was my brother who received it I loved it! It had not too much or too little detail but just right! The story was so interesting and kept me wanting to read more and more! The only bad part: YOU CAN"T PUT IT DOWN!

one of the better books i have read great awsome

I love this book so much it’s awesome!🤩

It was a pretty good book. One question I was really curious about that if Isabel was really human. Like Ted and Caleb kept asking themselves about it but the answer never really comes up in the book. I really liked Ted, though. Great problem solver, smart, etc. I like how the author made it so the app where he found out everything wouldn't appear when he tried to show Isabel and Caleb. The book was really suspenseful! It was a pretty good read.

This is a book about a young puzzle solver. And he’s finding out stuff about his grandfather who made puzzles so he could protect his valuable. Over all this was a really good book to read.