When Darren Dirkowitz's evil stepbrother (code name Waldo) gets hold of Darren's tippity-top-secret spy journal, he threatens to expose it to the entire Preston

In this middle-grade novel and sequel to Dirk Daring, Secret Agent, Darren Dirkowitz and his associates must embark on a daring mission to outsmart a gang of te

Darren Dirkowitz thought his life was over when his tippity-top-secret alter ego, Dirk Daring, Secret Agent, was outed to the entire Preston Middle School stude

In this middle-grade novel and sequel to Dirk Daring, Secret Agent, Darren Dirkowitz and his associates must embark on a daring mission to outsmart a gang of te

In the midst of an international crisis, Heidi Milligan, a beautiful, brilliant American naval commander, accidentally discovers an obscure reference to the lon