Spontaneous coronary artery dissection is a rare clinical event and often a fatal cause of ischaemic heart disease occurring predominantly in young or middle-aged otherwise healthy patients. We present the case of a 59-year-old female patient who was admitted to our coronary care unit with acute anterior myocardial infarction. Coronary angiography showed a long dissection involving the left coronary artery. Emergency coronary artery bypass grafting was performed unsuccessfully.