Slippery Sandcastle - It's a mystery when Franny revisits Johnny in Jamaica, where they build a sandcastle at the beach, down by the water. But after returning from a short visit to the market, they discover their sandcastle is missing! Playing detectives, they set about collecting clues, and realize the tide must have washed their sandcastle away. Butterfingers - Franny travels back to Pioneer times, where she learns how milk is churned into butter.