Inspired by a tragic event - the murder of banker Edouard Stern - Regis Jauffret imagines how the story unfolds in the mind of the murderess. She had met the banker at an exclusive business dinner: together with other call girls, she was the dessert. Their love was based on sadomasochistic games, including money and firearms. Murder was the orgasmic supreme achievement. Every sentence carries her rough, tortuous and greedy personality. Severe is an explosive blend of violence, passion and crime.