11 books • 3 series
Brain Freeze (Otto Undercover (Paperback), #6)
Brain Freeze (Otto Undercover (Hardcover), #6)
The Brink of Ex-Stink-Tion (Otto Undercover (Hardcover), #5)
The Brink of Ex-Stink-Tion (Otto Undercover (Paperback), #5)
Toxic Taffy Takeover (Otto Undercover (Hardcover), #4) (Otto Undercover (Paperback), #4)
Otto Undercover 03 Water Ballo
Canyon Catastrophe (Otto Undercover (Prebound), #2)
Born to Drive (Otto Undercover (Prebound), #1)
Otto Undercover 02 Canyon Cata
Otto Undercover 10c Mix Ctr
Otto Undercover 01 Born to Dri