I was hired to find who was poisoning sodas at what I think was a family restaurant. There was a grey dust-looking stuff on the edge of shelves of cans, drinking a soda from a shelve with that on it would kill you. I took a wet towel and wiped it off. There were some elements of other cultures, and ancient times that I don’t remember at all.
There were also trays of beads being poisoned. I eventually went to a bakery who had the same dust on their trays, and I told the baker that I would no longer buy the type of cookie on the poisoned trays. He got upset, and I said I would also no longer purchase beads from him as a catch to make sure he was the one poisoning. He got upset, and I busted him in a manner that I do not remember.