The Outer Limits - The Invisibles torrent

Aliens plan to take over the U.S. by recruiting disaffected loners, who are practically "invisible" to U.S. authorities. Each invisible is para-sited by a fish-like creature who adapts and controls the human. A U.S. government agent infiltrates the cats' paws, who are to get close to powerful U.S. government officials and transfer the creatures into the officials.