Four fun kids find themselves in the middle of a mystery on every school trip they take Visual and verbal clues are sprinkled throughout the story to help the reader solve the mystery before the kids do.

Catalina "Cat" Duran and her friends thought they were on a field trip to see the seals at the aquarium. So why has the seal show been cancelled?

Edward "Egg" Garrison thought the field trip to the caverns would be a great place to take pictures. It turns out it's the perfect place for a mystery!