in season 3 because of Regina fighting because she thought Daphne was an intruder at K&D she held a gun at her when Angelo finds out that Wes made her get it he asks Regina if shes cheating yet she is not then gets in to in argument Angelo ran out to drive to back to his apartment he gets into a car crash and goes to the hospital Angelo is stable in the hospital at first, bleeding and breathing normally. However, he begins to bleed excessively while only Bay is present, unaware of what is happening. Alarms go off when it becomes an emergency, and doctors rush in and begin to treat him. Later, Daphne reads the doctors lips through glass doors,and soon was able to understand that Angelo's brain has completely stopped functioning, and that the only reason he is alive was because the machines were beating his heart and breathing for him. Bay and Emmet soon find out in his Final Will that he would have wanted to have the life support removed. They soon unplug the life support, and Angelo dies. I was so sad I even sobbed along with the Kennishes and Regina:(