Someone please turn this into a mystery novel:
For more than three and a half centuries, the death of René Descartes one winter's day in Stockholm has been attributed to the ravages of pneumonia on a body unused to the Scandinavian chill. But in a book released after years spent combing the archives of Paris and the Swedish capital, one Cartesian expert has a more sinister theory about how the French philosopher came to his end.
According to Theodor Ebert, an academic at the University of Erlangen, Descartes died not through natural causes but from an arsenic-laced communion wafer given to him by a Catholic priest.
Historical fiction isn't my forte, or I'd be on it in a second.