The Best Never Rest. Confronting cold cases, running secretive stings, and chasing down kidnappers are all part of the job for the unsung heroes of the Major Case Response team in the suspense-packed Season 15 of NCIS. As the team continues to search the jungles of Paraguay for Special Agents Leroy Jethro Gibbs (Mark Harmon) and Timothy McGee (Sean Murray), the cases keep coming in this x-disc, xx-episode set. Co-stars Pauley Perette, Emily Wickersham, David McCallum, Brian Dietzen, Rocky Carroll, Duane Henry, and Wilmer Valderrama are joined by Maria Bello as Special Agent and forensic psychologist Jacqueline Stone to solve suspicious suicides, run protection details and face the crimes and the criminals that threaten our country. Suspense rises in the ranks in this 24-episode, 6-disc set.