1. Trick or Treat in "Oil & Water" Season 11 Episode 6
NCIS partners with the Coast Guard Investigative Service (CGIS) to investigate a suspicious explosion on board an oil rig. Meanwhile, no one is safe from a mysterious prankster who is targeting the NCIS team, on NCIS, Tuesday, Oct. 29 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Pictured left to right: Mark Harmon and Sean Murray Photo: Cliff Lipson/CBS ©2013 CBS Broadcasting, Inc. All Rights Reserved.