Nate the Great interrupts his backyard vacation to find his friend's lost grocery list--before lunch.

Wealthy secret agent Olivia Sharp helps depressed Duncan find a friend.

Nate the Great investigates two cases that may be connected, involving a missing valentine and a valentine that came from nowhere.

Nate the Great goes to San Francisco to solve a mystery with his cousin, Olivia Sharp, who is also a detective.

Perfect Desiree seeks the help of wealthy problem solver, Olivia Sharp in becoming princess of the school.

Nate and his dog Sludge help Rosamond discover who has been tearing pages out of her books.

A friendly competition to grow the best organic garden is underway. The prize is tempting--a ribbon, a photo and article in the newspaper, and some all-you-can eat favorites from Ned's Diner! Esmeralda, Annie, Oliver, and Rosamond are among the competitors. Just a few days before contest judging, some of Rosamond's tomatoes go missing, and Nate and Sludge are called to investigate. Who is eager for tomatoes, and why? Nate and Sludge are on the case...