Jo accidentally stabbed a glass into Harry’s leg. Izaak tried to stop the flow of blood from Harry’s thigh but, when Jo began to phone for an ambulance, Izaak angrily knocked the phone out of her hand. However, after about 30 minutes, he gave up trying to stop the bleeding and allowed Jo to make the call. 

Even so, Harry died shortly after arriving at the hospital. The medical evidence was that earlier treatment would almost certainly have saved Harry’s life.