Mrs. Cooney, the school nurse, is so beautiful that A.J. has a crush on her--even though he suspects she might be an international spy!

Spy Guy is determined to become a good, sneaky spy, but he cannot do it without the help of his father, the Chief.

Eight-year-old secret agent Adam Sharp travels to Australia where, with the assistance of Alice Springs and a washed-up TV star, he tracks down the evil mastermind behind a plan to block all television stations except his own--The Happy Channel.

While trying out the spy glasses, spy hat, and other items in their new spy kit, seven-year-old Henry and his dog Mudge make a new friend and form a spy club.

On his first day at Brooklyn's P.S. 858, fifth-grader Michael K. is teamed with two very strange students, and while he gradually comes to believe they are aliens who need his help, he has trouble convincing anyone else of the truth.