Hey guy, so we don't need to shout. It was pointed out in previous posts, numerous times, plus there are walkthroughs strewn all through the forum. You need to take doyle to the merchant, you need to take him to the mirror, you need to get the dagger in the attic, you need to sell the dagger and buy pills, you need to swap the pills in the cupboard/dresser/klerekas(etc).
Hey Charlesilv4, what you need to do is go to vera in the library and do the grab there, it then takes it away, the image will bug in and out occasionally during other scenes, but it resolves itself that way.