Narrative Flaw

I just finished reading a book (Blindsight by Robin Cook), that featured two different narrative tricks: the first is where the reader solves the mystery way before the main characters because we have all the information, and the second being the trick of having the characters figure it out but the author doesn't explain the mystery until the very end. I have obviously come across both of these before, and they can be satisfying in their own way - but they absolutely do not work together. The first structure csan be fun because as a reader you have solved the problem and you are excited to see how the author will allow the main characters to discover what you already know. The second is only effective if the plot is so twisty you can't figure out the twist on your own, so when the main character does it is frustrating (in a good way) and you have to keep reading until the climax when everything is revealed. When both of these are used together all it does is make you think the characters are especially stupid - and when they finally figure it out but it still isn't explained you just think "yeah, we get it. Now finish the story already." Probably not the atmosphere of suspense the author was going for.