Precocious eleven-year-old self-made-supersleuth Sophie "Sesame" Seade investigates the disappearance of Jenna Jenkins, a student at Cambridge University, where Sophie's father is chaplain and her mother is Head of Christ's College.
Seven-year-old Tessa and ten-year-old Cameron daughters of the first female president, and owners of a very rambunctious dog, play detective when a baton belonging to the director of the Marine Band goes missing at the White House.
Idaville's secret weapon against lawbreakers, ten-year-old Encyclopedia Brown, assists the police force with ten insoluble cases. Solutions are at the back of the book.
Second-grader Flaca investigates three mysteries, from her missing flip flop, to who put a food she is allergic to in her lunch, to how she will find her dancing ability before performing salsa at her sister's quinceanera.
The Boxcar children travel to Maine, take canoes into the wilderness and live in a house exactly like the one on Surprise Island, except the Maine house is brown, not yellow. Soon they are trying to untangle the mystery of the two houses.
While on a bicycling tour of Ireland, Nancy, Bess, and George find themselves involved in a dangerous mystery when they begin to suspect that someone is targeting the tour members.
