In rural Illinois, a deputy sheriff (Christopher Meloni) combats insidious extraterrestrials who've implanted devices to control various human minds. Karen: Marcia Cross. Agent Naples: John C. McGinley. Sen. Arnold: Dabney Coleman. Tammy: Courtney Crumpler. Comm. Faulk: Chad Lowe. Madeline: Traci Dinwiddie. Mrs. Darlington: Janell McLeod. Peter Markle directed.