A febrile and unconscious man was sent to our emergency department. On physical examinations, some dark red ecchymosis/discoloration over the trunk and track mark in the left-sided groin region were seen. Brain CT scan showed septic emboli complicated with hemorrhage. Chest X-ray revealed pulmonary emboli. Aortic valve vegetation was found by echocardiography. Although aggressive treatment and resuscitation were taken, he died of methicillin-sensitive Staphylococcus aureus sepsis and multiple organ failure. Intravenous drug users are susceptible to right-sided infective endocarditis. In our case, left-sided infective endocarditis with lung and brain embolism resulting in fatality was relatively uncommon. Review of literature was also made for this article.