Doktor Proctor Books in Order

Nilly and Lisa befriend an eccentric inventor whose powder produces odorless farts and, in stronger doses, sends people skyward. Selling it at school and confronting bullies becomes more dangerous when someone steals the powerful formula for darker purposes.

Doctor Proctor uses a time-traveling bathtub to recover his lost love, but his plans go awry. Nilly and Lisa follow him into the past, battling unreliable Time Soap and historical complications as they try to reunite the couple.

While Doctor Proctor, Nilly, and Lisa are busy inventing, everyone watching a popular television singing competition begins behaving strangely. The trio discovers a threat far bigger than entertainment and turns to their unusual powder to stop it.

A billionaire steals Norway's gold and turns its last bar into a soccer trophy. After a failed attempt to retrieve it, Nilly and Lisa join an underdog team, hoping Doctor Proctor's inventions can help them win the prize back.

Norway's entire gold reserve has shrunk to one bar, and even that is stolen and hidden inside a soccer trophy. Disguised as detectives, grannies and babies, Doctor Proctor, Nilly and Lisa launch an impossible counter heist before the theft is exposed.

Norway's king sells Christmas to Mr. Thrane, who allows celebrations only for those spending a fortune at his store. Doctor Proctor, Nilly, and Lisa set out to find Santa and restore the holiday for everyone.

After the king sells the rights to Christmas to profit hungry Mr Thrane, anyone who cannot afford huge spending is banned from celebrating. Doctor Proctor, Nilly and Lisa head off to find Santa and restore a fairer version of the holiday for everyone.