Poisoning at Nice under the Restoration, judicial investigations and toxicological experts' reports. – Poisoning may be a fairly well-known crime in legal history, but the judgements of the Senate in Nice (at the time of the Restoration in the Kingdom of Piedmont-Sardinia) shed some new light on some of its issues. The court worked according to principles of organisation, a legal system and a procedure which had all been inherited from the Ancien Régime and re-established under the Restoration, and which allowed it to conduct core criminal investigations. These investigations aimed at finding out the intention of the criminal and the means used in committing the crime. They relied, in spite of the limitations of scientific knowledge, on toxicological expertise, which became an essential stage in prosecuting cases of poisoning.