The Danger Box by Blue Balliett
The Sisters Grimm Series by Michael Buckley
In Book One of the series, we meet two sisters, Sabrina and Daphne, who have been sent to live with their mysterious grandmother, Relda Grimm. From their first day in Ferryport Landing, the sisters begin to unravel a mystery that reveals a family secret
Diamond of Drury Lane by Julia Golding
Closed for the Season: a Mystery Story by Mary D. Hahn
Two 13-year-old boys, Arthur and Logan, set out to solve the mystery of a murder that took place some years ago in the old house Logan's family has just moved into. The boys' quest takes them to the highest and lowest levels of society in their small Maryland town, and eventually to a derelict amusement park that is supposedly closed for the season.
13 Treasures by Michelle Harrison
Tanya is no ordinary girl. She can see things...fairies. But not the fairies we imagine. Evil fairies who cast spells on her. When Tanya's mother sends her away to live with her grandmother at a secluded countryside mansion, Tanya finds herself drawn to the nearby woods, where fifty years before, a girl vanished.
As Tanya learns more about this girl, she finds that the key to uncovering the mystery appears to be buried deep in fairy lore — and the story of the 13 TREASURES...
Bunnicula: A Rabbit-Tale of Mystery by James Howe
The Invention of Hugo Cabret by Brian Selznick
Montmorency: Thief, Liar, Gentleman? by Eleanor Updale