2007 | 15 Episodes

Season 1 of Les faits Karl Zéro-Les dossiers Karl Zéro premiered on November 13, 2007.

2008 | 20 Episodes

Season 2 of Les faits Karl Zéro-Les dossiers Karl Zéro premiered on March 3, 2008.

2009 | 20 Episodes

Season 3 of Les faits Karl Zéro-Les dossiers Karl Zéro premiered on January 2, 2009.