Ep 9. Dawn of the Mind Parasites!

Mr. Smith gets a wig. Nick and Perry believe that it's an alien creature infiltrating the human brain in an attempt to take over the Earth. The dogs kindnap the dangerous "Fuzzock" and submit it to all kinds of horrible questioning. But to no use. The next day, they follow Smith to the wig shop (which to their eyes is a Mother Ship!). Here they meet rows and rows of alien invaders...