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.

Brent Huff, Chelsea Harris, Diane Neal, Fay Masterson, Jon Lindstrom, Leslie Hope, Michael Buonomo, Peter Downing, Rick Gonzalez, Rodney Rowland, William Ragsdale