When Lillebror's mother is mysteriously hurt in a biking accident, Lillebror and Knerten turn the town upside down trying to find the culprit.

Adrian Grønnevik Smithas Lillebror
Åsleik Engmarkas Twigson (voice)
Pernille Sørensenas Mother
Jan Gunnar Røiseas Father
Petrus Andreas Christensenas Philip
Per Schaanningas Eilertsen
Sampda Sharmaas Karoline (voice)
Ole Johan Skjelbredas Veslas Far (as Ole Johan Skjelbred-Knudsen)
Tone Beate Mostraumas Bilmekaniker