Rj is not part of tyger, tyger. Partridge is not RJ. He is a fanboy of Rj, and he saved Patrick and said tyger, tyger bc he is part of the group and knew it would throw off Jane. Partridge is a ghoul and irksome to Patrick bc he idolized RJ and did not want RJ to get caught, he saved Patrick so rj could kill him. He may have even been responsible for some copycat killings. THAT is why RJ killed him first. I am sure RJ loathed partridge.