I still think it was vanesceula! Just because she said she didn't do it doesn't mean she didn't do it! She's hardly trustworthy and it wouldn't have been in her best interest to admit she kill ascertes! Also since Ascertes was rumoured to be human even if they made him a vampire he could have any one of the hundreds of vampires killed! Kinda like how we somehow managed to kill the shapeshifter who was that elf clan leader's husband on tarddidad! One in a million chance!
Miss Alaskasaid: This is actually a really awesome theory that seems to fit. I wonder if this is what developers have up their sleeve? I gotta go do that quest good theory! As someone who has been reading the books I remind everyone that it's not the first time a varrockian advisor was a double agent! look up the name papelford in the rs wikia!