Marjorie Weinman Sharmat

When Rosamond looks into her crystal ball to read Nate the Great's future, she sees a new case for him to solve-- her money box is missing and she wants him to find it.

When Rosamond turns a phone message from Pip's mother into a music lesson with a secret meaning, Nate the Great steps in to solve the mystery.

Nate the Great and his cousin Olivia are on the case of a runaway turkey, but unfortunately the clues appear to contradict each other.

THE OWL EXPRESS
Nate, the great detective, and his dog Sludge, hit the rails on their latest case. Their mission: To guard an owl named Hoot. Hoot belongs to Nate’s cousin, Olivia Sharp, and she thinks someone on the train might be out to get her feathered friend. Then Hoot disappears! 
THE TARDY TORTOISE
The sun is shining, the birds are singing, and someone is eating the flowers in Nate's garden. A green tortoise is slowly stepping...

Nate the Great follows the clues to find his lost dog, Sludge, in a department store.

Though it means Nate can't get his dog ready for the smartest pet contest, he agrees to search for the missing prize for the contest.

Nate the Great takes on his first night case and tries to solve the mystery of the garbage snatcher. Includes related facts, jokes, recipes, and activities.

As more and more of his flowers display the bite marks of a wandering tortoise, Nate sets out to uncover the mystery of the reptile's origins.

The reader is asked to help Nate the Great solve the mystery of his friend Annie's missing dog Fang.

Nate the Great investigates the disappearance of a homemade pillowcase belonging to Rosamond's cat Big Hex.