Books like Nate the Great and the Missing Key

My first grade son is at the point that he would not pick out a Nate the Great book to read on his own anymore. However, I bought a whole bunch of them and am making him read them with me before he is definitely too old to read them. He loves pointing out all of the things that are "wrong" with them. For example, I ended up having to read the first page for him because he wouldn't stop laughing. He was like, "Mom, who talks like that. . . 'I, Nate the Great, am a detective.' You should just say, I'm a detective." Then Nate's friend Annie comes to his house and can't find the key to get into her house to have a birthday party for her dog. Her parents aren't at the house either because they don't like dog parties. My son was like, "Mom, I don't think you should be having a party at your house when your parents aren't there." (Exactly . . . I sure hope my son remembers this line of reasoning when he is a teenager.) Then later in the book, he points out to me, "I don't think it's safe for Nate to be making pancakes on his own either. Where's his mom? He's always making pancakes and leaving notes for her." We got a big kick out of them looking in the garbage can for the key too. (This is not the first time where Nate has looked in a garbage can when trying to solve a mystery. Maybe he's trying to follow the motto, "If at first you don't succeed, try, try, try again.") I must admit, this was the first Nate the Great book where we weren't able to figure out what happened to the key ahead of time so kudos to the author for your brilliant trickery. This book was a little too unbelievable for my son but maybe that's what makes it a little bit fun to read.