What's Going on With Allan Cardak?

Allan cardak took a very scientific approach to proving when mediums were legit and when they were not. He was able to go to all these different mediums and get talked to the same being or soul on the other side, get the same message each time. So that was pretty compelling. And with him, he there's what's called spiritism now, which is quite popular in brazil and an other aces,. based on allan cardak's work.