You are about to read books about children and a computer. They try to solve mystery. In these series people disappear, and other things. I think you will like this series.

     This first book titled The Night of the Living Caveman is about a trip to the museum. While at the museum, Alex saw the exhibits move, the main characters are Gabe, Casey, and Mr. Cepida, and Alex.  He tries to show them and he does but they get lost. To find out what happens to these kids in this mystery, you need to read the book. 

       The second book is about a trip to the museum and the mystery that awaits these kids inside the museum. While at the museum the kids saw the an exhibit move.  The main characters are Gabe, Casey, Mr. Cepida, and Alex. Alex tries to show them the moving exhibit, but while in the museum they get lost. To find out what the conclusion is you need to read the book!

 Many different authors write Ghost Writer Books. These books are very interesting and have a different mystery involved.  There was also a Ghost Writer TV. show on PBS.  Basically, they took the TV series and made them into a book.