Various Readers

The local radio station is putting on the Great Detective Race, where contestants must solve riddles and search all over Greenfield for clues leading to the grand prize! One of the prizes would make a perfect gift for Mrs. MacGregor, so the Aldens sign up for the contest. Soon they're following the riddles' clues all over town. But, when some of the clues turn out to be fake, it's clear that someone is playing unfairly. Could another contestant in...

The Aldens are helping the owner of a local restaurant grow delicious food in a garden. They work hard to water and weed and take care of the fruits and vegetables that are growing. But, soon the children notice the strangest thing-the plants are moving. The tomato plants aren't in the same spot they were planted in! How could that be happening? Then, when fruits and vegetables start to vanish from the garden, it's clear that a brand new mystery is...