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- Episode aired Sep 3, 2021
S17E154 Unreliable Christoph assures Rosalie: they only have a business relation. Silly surprise for Robert and Lia. Ariane reveals Erik her evil plan. Can the professor be convinced to cont... Read allS17E154 Unreliable Christoph assures Rosalie: they only have a business relation. Silly surprise for Robert and Lia. Ariane reveals Erik her evil plan. Can the professor be convinced to continue his research? Gerry hides Alfons' wallet.S17E154 Unreliable Christoph assures Rosalie: they only have a business relation. Silly surprise for Robert and Lia. Ariane reveals Erik her evil plan. Can the professor be convinced to continue his research? Gerry hides Alfons' wallet.