Mystery Fiction - JF

Eleven-year-old Kazuko, already well-known for "helping" the police, investigates a rash of dognappings, aided by her Japanese mastiff, Genki, and friends.

Twelve-year-old Candice Miller is spending the summer in Lambert, South Carolina, in the old house that belonged to her grandmother, who died after being dismissed as city manager for having the city tennis courts dug up looking for buried treasure--but when she finds the letter that sent her grandmother on the treasure hunt, she finds herself caught up in the mystery and, with the help of her new friend and fellow book-worm, Brandon, she sets out...

Nikki Tesla is a genius, so mostly she finds school boring, and amuses herself by inventing things, like her mysterious missing father; trouble is most of her inventions have serious, lethal potential (like the death ray, which just blew a hole in her floor); so she and her ferret are hustled off to the special Genius Academy with classmates who are equally exceptional, although she still worries about fitting in--but when her death ray disappears...

While visiting New York's Yankee Stadium with Kate's mother, cousins Mike and Kate decide to investigate the rumor that the ghost of Babe Ruth is haunting the stadium.

When their game of neighborhood spying takes a dark turn one night, pre-teen sleuths Sophie Young and Grace Yang find themselves caught in a dangerious cat-and-mouse game with their bizarre guidance counselor, who may be hiding something sinister.

After unscrupulous collector S. Wendell Palamino cons him out of a valuable baseball card, sixth-grader Griffin Bing puts together a band of misfits to break into Palomino's heavily guarded store and steal the card back.

Paired together after a veteran detective retires, platypus police squad members Rick Zengo, a hotshot rookie, and Corey O'Malley, a hard-nosed old-timer, struggle with their differences while tackling their first case involving a missing schoolteacher and a duffle bag filled with illegal fish.

Eleven-year-old Tabitha Crum, whose parents were just about to abandon her, is invited to the country estate of a wealthy countess along with five other children and told that one of them will become her heir.

Junior sleuth Maisie Hitchins, who lives in her grandmother's boarding house in Victorian London, uncovers an intriguing plot involving stolen sausages, pilfered halfpennies, and a fast-paced bicycle chase.