The Boxcar Children, now living with their grandfather, spend the summer on their Aunt Jane's ranch. Their aunt seems quite unhappy until at the end of the summer a surprise discovery brings happiness to all

The Alden children meet Mike Wood and a strange chain of events begins. Mike's house is mysteriously burned down, a man in a blue hat appears, and the Alden's uranium mine is in danger of being sabotaged. The four children solve the mystery.

The mysterious death of an eccentric millionaire brings together an unlikely assortment of heirs who must uncover the circumstances of his death before they can claim their inheritance.

While on a camping trip with their grandfather, the Alden children try to find out about the loud music and missing food that threatens to scare away other campers

A mouse who lives in Sherlock Holmes' cellar evolves a daring plan to uncover the identity of a kidnapper.

After passing a series of mind-bending tests, four children are selected for a secret mission that requires them to go undercover at the Learning Institute for the Very Enlightened, where the only rule is that there are no rules.

Sixth-grader Ben Pratt's life is full of changes that he does not like--his parents' separation and the plan to demolish his seaside school to build an amusement park--but when the school janitor gives him a tarnished coin with some old engravings and then dies, Ben is drawn into an effort to keep the school from being destroyed

When his best friend disappears from her bedroom in the middle of the night, thirteen-year-old Theo uses his legal knowledge and investigative skills to chase down the truth and save April

"When Nancy finds an old desk at a tag sale, she soon finds out that someone left behind a key. Nancy and Bree set out to unlock the secret of the silver key in the hopes of finding some treasure along the way."-- Page [4] of cover.

The detective lay in bed with his eyes closed. But he couldn't sleep. He was thinking. He always thought best in bed. Especially with his eyes closed. Something is going on in the forest: one of the animals is saying nasty things about the other forest creatures. But no one dares make a statement to the police. Who is the culprit? Detective Gordon and his assistant Buffy must investigate! But this is a complicated case. The two police officers split...