Brutus, along with many other co-conspirators, murdered Caesar in 44 BC. He promised to share the "heavy secrets" of his heart with his wife but it is unclear if he ever got the chance. Some historians believe Porcia may have known about the plot, and may have even been involved in the conspiracy itself. Plutarch claims that she happened upon Brutus while he was pondering over what to do about Caesar and asked him what was wrong. When he did not answer, she suspected that he distrusted her on account of her being a woman, for fear she might reveal something, however unwillingly, under torture. In order to prove herself to him, she secretly inflicted a wound upon her own thigh with a barber's knife to see if she could endure the pain. As a result of the wound, she suffered from violent pains, chills and fever. Some believe that she endured the pain of her untreated wound for at least a day. As soon as she overcame her pain, she returned to Brutus and said: