Anesthesiologist Frédéric Péchier accused of dozens of poisonings in France. He injected potassium at lethal doses or analgesics, a cocktail that caused the patient to suffer.

12 patients did not survive and, despite the complexity that exists inside an operating room, their colleagues began to suspect. Six years have passed and little progress has been made, given the difficulty of finding evidence. But this week an investigating court ruled that he can return to medical activity, albeit in a very limited manner.