Book 1

When neighbors claim to have seen her brother Allen, dressed in his Halloween monster costume, committing acts of vandalism, Darcy Doyle vows to find out who's framing him.

Book 2

When a crime wave strikes the fifth grade, Darcy Doyle tries to find out who is stealing homework papers.

Book 3

Darcy Doyle investigates the strange thumping and scraping noises coming from Mrs. Pendleton's attic.

Book 4

When her snobby classmate Brittany loses her expensive poodle on the day of the pet show, Darcy Doyle agrees to find the missing dog.