Second-grader Dawn Bosco puts her mystery-solving skills to the test when her former best friend, Emily Arrow, loses her birthday ring   Dawn Bosco and Emily Arrow used to be best friends, until Dawn took Emily's unicorn. Even though Dawn eventually gave it back, Emily still won't talk to her.   When Emily's blue birthday ring goes missing after art class, the rest of the second grade accuses Dawn of stealing it. Dawn sets out to solve the mystery...

The High Rise Private Eyes, animal detectives, try to find the cat who stole their neighbor's binoculars.

Bunny and Jack investigate the disappearance of a trombone from Mr. Riley's music store.

While having a picnic on the docks, animal detectives Bunny and Jack meet a dog whose one and only lawn chair is missing, and they set out to solve the case.

Bunny and Jack, animal detectives, take a break from playing cards to look for Bernard Bear's missing messenger whistle.

Reed, from a working class family, is attending the wealthy Easton Academy on a scholoarship, where she finds out that rich girls have some very dark secrets.

Reed's boyfriend, Thomas Pearson-the popular, easygoing, irresistibly handsome and charismatic boy she fell in love with-is dead. No one knows how it happened, and everyone is after the truth. Or are they? Life at Easton Academy begins to feel very different. Taylor is acting like the poster child for Prozac, Kiran is spiking her cornflakes, Noelle is being kind of...nice, and Arianna keeps floating along as if nothing has happened.Thanksgiving break...

Reed's new boyfriend was arrested for the murder of her former flame Thomas Pearson, but she is convinced of his innocence and that the killer is still lurking.

After the death of Cheyenne, Reed is elected the new leader of Billings Hall, but her grip on the social scene is tenuous, as she discovers when Easton is the only prep school not invited to a Legacy party and it falls to her to get them back on the list.