Wow, glad you're enjoying it. First off, because Harry is his adopted son (he adopted Harry in the first story in this series, if you read it) Harry cannot get L.S., as it is passed through genetics and Harry has no blood connection to Snape. Secondly, there are a number of reasons for why Severus is not working on developing his own cure. He doesn't understand how Lethifold Syndrome works, and even the healers have limited knowledge of that, as the disease is realatively new. I know I haven't explained any of this, but it wasn't a priority of mine for Snape to try to cure himself, because in my mind he sort of understands that while he is a great potions master, this is out of his hands. On top of that, the healers - as mentioned in this chapter - have sent him a number of potions, and he was not sure of how he could have improved them or why they did not work. It's all sort of complicated, and quite a good question on your part. In the drawing board stage I did have a little bit of him trying to create a cure, but I had decided it was too dangerous for him to keep testing potions and he would not have the resources to properly understand how the disease was creating the effects inside him. Anyways, I really hope that explanation helps some, and I'm sorry if I never did mention any of this; like I said, I was focusing on other themes and such in the story! Thank you so much for the review Vanime, and the wonderful question that got my mind thinking! Cheers, Em.