90 books • 9 series
Book #2: The Ghostwriter Secret
Book #2: The Ghostwriter Secret, 2
Book #3: It Happened on a Train
Book #4: Danger Goes Berserk
Book #3: The Sports Pages
Book #4: Guys Read - Other Worlds
Book #4: Other Worlds
Book #5: Guys Read: True Stories
Book #5: True Stories
Book #1: Hi, Jack!
Book #2: Jack Blasts Off
Book #3: Jack At Bat
Book #4: Jack Goes West
Book #5: Jack at the Zoo
Book #3: Fre-Mac B Espion N 3 - Combat
Book #4: Fre-Mac B Espion N 4 - Operati
Book #5: Fre-Mac B Espion No 5 - La Mel
Book #1: Mac Undercover
Book #3: Top Secret Smackdown
Book #4: Mac Cracks the Code
Book #5: The Sound of Danger
Book #3: The Terrible Two Go Wild