Im stuck on priest in peril what do you do?

Well first you talk to king Roald and he will tell you to check on this old man (forgot name)and he tells you to go in the muesilemum and kill the guard dog.then you knock on the door again and then you tell the king what you did.he will shout at u.then knock on the door and it will open.go to the top floor there should be the old man in a cage and a vampire coffin.he will tell you that a monk has the key. So go to the floor below and kill the lvl 30 monks then you should get the gold key.talk to the man and then he tells you to go to the muselium and open the door.study all the monuments untill you find one with a key symbol.and use the gold key with the monument and you should get a iron key.this is the key to unlock the cage go to the man and open the cage and talk to him.he will say he can't risk goin out because of the vapire.then you get a bucket and go to the mueslum there should be a well in the middle of the monuments get the water go to the man tell him to bless the water. Then use the bucket with the coffin then he tells you to meet him at the end of the muslium.he tells you to get him 50 ess don't take him notes the propper thing when you get 28 go to him then get some more then you complete the quest. the reward is a wolfbane and some xp. My runescape user is steven ogden no space or space dno.