Josh and his two friends look for the person who stole a peregrine falcon from its nest.

After her troublemaking twin, Scarlet, vanishes from Rookwood boarding school, shy Ivy tries to track her down, using pieces of Scarlet's journal carefully hidden all over the school for Ivy to find.

Enola Holmes, much younger sister of detective Sherlock Holmes, must travel to London in disguise to unravel the disappearance of her mother.

Nancy Drew tries to free a prince who has been framed for the theft of a painting.

Eighteen-year-old aspiring chemist Elinor Dashwood and her younger sister Marianne, a budding detective, work together to solve the mystery of their father's murder.

When twelve-year-old Steve Brixton, a fan of Bailey Brothers detective novels, is mistaken for a real detective, he must elude librarians, police, and the mysterious Mr. E as he seeks a missing quilt containing coded information.

Teased for his youth and diminutive stature, twelve-year-old Fletcher Moon is a fully-licensed detective who, while investigating his first case, is framed for arson and must team up with his prime suspect to clear his name and find the real criminal.

Rescued from the gallows in 1850s London, young orphan and thief Mary Quinn is offered a place at Miss Scrimshaw's Academy for Girls where she is trained to be part of an all-female investigative unit called The Agency and, at age seventeen, she infiltrates a rich merchant's home in hopes of tracing his missing cargo ships.

Sophie Smith is a teenage orphan stuck in a boarding school in London, but at night she dreams of Russia and wolves--then, on a class trip to St. Petersburg, she finds herself and her two friends deliberately separated from the group and whisked off into the silver forest of her dreams, where a mystery awaits.

While on winter break, Charlotte and Jamie find themselves caught up in another mystery when Charlotte's uncle goes missing and they begin an investigation into a German art forgery ring.