Merlin season 4

well!here it is the much awaited season 4,this monies is extra ordinary interesting:After morgana has been discoverd of having magic,she left camelot,(beginning of seson 4 first episode)morgana was taking morganus away to the isle of the blessed,while going they were challenged by some camelot soldiers,while this was going on morgana used her magic killing the soldiers fortunately one of the soldiers survived and reported back to camelot.when morgana and morganus got to the isle of the blessed,morganus sacreficed her life and instructed morgana to kill her with the dagger in her hand and morgana did this and the spirit from the underworld were released and the wost thing is that merlin's magic could not be use against the spirit of the underworld.the spirit can niether be killed hurt,when this news became know to arthur he decided to go after the spirit that has been released, towards doing this, as you merlin's destiny is protecting arthur,but unfortunately while  trying to protect arthur from being killed by the spirit,he worst touched by the creature and looks like he's dead so he was brought back to gaius.(end of the first episode).