4 books in series

Doktor Proktor

Doktor Proktor is a 4-book series with 4 primary works first released in 2007 with contributions by Jo Nesbø.

Doctor Proctor's Fart Powder
Doktor Proktors tidsbadekar
Doktor Proktor og verdens undergang. Kanskje.
Doctor Proctor's Fart Powder: The Great Gold Robbery