Marjorie Weinman Sharmat

Nate the Great investigates the mysterious disappearance of the purple plastic octopus that his baseball team uses for second base.

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

When he finds a torn piece of paper with only part of a word on it, boy detective Nate sets out to find the missing pieces.

Even a deep snow the week before Christmas can't keep Nate the Great and his dog Sludge from finding the special card sent to Annie's dog Fang by his mother.

"Nate the Great and his dog, Sludge, would like to take a break from solving cases. So they hide out in the woods. But soon they hear familiar voices shouting, "Nate the Great, where are you?" There are many mysteries to solve!"--

Nate and his dog Sludge are determined to find the recipe for his mother's monster cookies.

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.

While traveling on the train to San Francisco with his cousin Olivia's owl, Nate the Great and his dog Sludge must use all of their detective skills when the owl suddenly disappears.

Although Ferdinand has worked on his valentine for Florette since November, he's sure that she's forgotten him on Valentine's Day.

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