The reader is invited to join Cody and Maria as they try to solve mysteries that happen on various holidays.
After they move to Kansas, Cody and his friend Maria try to help a local artist who was cheated when she bought a wooden carousel horse
Cody and his friend Maria find themselves in the middle of several mysteries as they search for a missing emerald necklace.
Mysterious and dangerous things happen to Cody and Maria as they try to protect a stray cat that keeps vanishing.
When his neighbor Mrs. Sugarman reports seeing a seven-foot tall monster resembling Big Foot in New York City's Central Park, Cody Smith and his friend Maria Romero set out to investigate the sighting.
When a classmate is accused of stealing, Kevin decides to solve the crime.