Ace Detective Captain Coconut, who proclaims he can solve any mystery large or small, is called in to investigate the case of the missing bananas. He soon finds himself on a slippery trail of peels and missing numbers.

There's something lurking beneath the surface of Stately Academy - literally. In a secret underground classroom, Hopper, Eni, and Josh discover that the campus was once home to the Bee School, an institute where teachers, students, and robots worked together to unravel the mysteries of coding. Hopper and her friends are eager to follow in this tradition and become top-rate coders. But why are Principal Dean and the rugby team suddenly so interested...

Frank, Joe, Callie, and Iola travel to the Middle East to recover a stolen art treasure and free their friend Chet Morton, who has been accused of the theft.

Retold in graphic novel form, Sherlock Holmes is called in to investigate when Mrs. Warren fears that her new lodger is behaving in a very suspicious manner.

Retold in graphic novel form, Sherlock Holmes is called in by the Prime Minister to solve the mystery when an important document disappears from a locked box in the home of the Secretary for European Affairs.

Retold in graphic novel form, Sherlock Holmes is called in to investigate when the Duke of Holdernesse's only son disappears from the Priory School.

When the crime-fighting school lunch lady works as the cook at summer camp, she investigates the mystery of the legendary swamp monster.

Frank and Joe Hardy go undercover as part of a crew on an old commercial fishing boat; their mission is to discover why teen seamen mysteriously vanish while fishing.

When Nancy teams up with scientist Roy Hinkley to track down a high efficiency engine created during World War II that can operate at two hundred miles per gallon, they soon discover that the engine is haunted.