The Aldens are having a delicious time helping out at a pizza parlor! They toss dough in the kitchen and even invent a new kind of pizza. But when a blackout and other problems hurt business, they begin to wonder if someone is trying to shut down the pizzeria. It's piping hot mystery for the Boxcar Children!

Summer vacation on an almost private island gives the Aldens a challenge. Henry, Jessie, Violet and Benny used to live alone in a boxcar. Now they have a home with their grandfather and are spending the summer on their own private island. There is a mysterious stranger on the island with a secret--but that's not the only surprise in store for the Boxcar Children.