TV NCIS - Season 9 Episode 1 : Nature of the Beast NCIS - Season 9 Episode 1 : Nature of the Beast 7.627/10 by 2377 users Gibbs and the NCIS team have to find answers regarding Tony's months-long assignment when an NCIS agent is found dead. Details Casts Posters Images Title NCIS - Season 9 Episode 1 : Nature of the Beast Alternative Titles Морски детективи, Navy NCIS, NCIS or NCIS : Enquêtes spéciales, NCIS: Λος Άντζελες, NCIS - Tengerészeti Helyszínelők, NCIS (سرویس تحقیقات جنایی نیروی دریایی آمریکا), Specialioji jūrų policijos tarnyba (NCIS), Investigação Criminal, เอ็นซีไอเอส: หน่วยสืบสวนแห่งนาวิกโยธิน, Морська поліція, NCIS: Naval Criminal Investigative Service, N.C.I.S., Navy NCIS, Navy NCIS: Naval Criminal Investigative Service First Air Date 2003-09-23 Last Air Date 2025-05-05 Number of Episodes 487 Number of Seasons 23 Genres Crime, Drama, Action & Adventure, Networks CBS, Casts Sean Murray, Wilmer Valderrama, Katrina Law, Brian Dietzen, Rocky Carroll, Diona Reasonover, Gary Cole Plot Keywords , Timothy McGee Sean Murray Nick Torres Wilmer Valderrama Jessica Knight Katrina Law Jimmy Palmer Brian Dietzen Leon Vance Rocky Carroll Kasie Hines Diona Reasonover Alden Parker Gary Cole Episodes List NCIS Season 9 :Episode 1 Nature of the Beast Nature of the Beast 2011-09-20 From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has a shred of evidence connected... NCIS Season 9 :Episode 2 Restless Restless 2011-09-27 From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has a shred of evidence connected... NCIS Season 9 :Episode 3 The Penelope Papers The Penelope Papers 2011-10-04 From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has a shred of evidence connected... NCIS Season 9 :Episode 4 Enemy on the Hill Enemy on the Hill 2011-10-11 From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has a shred of evidence connected... NCIS Season 9 :Episode 5 Safe Harbor Safe Harbor 2011-10-18 From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has a shred of evidence connected... NCIS Season 9 :Episode 6 Thirst Thirst 2011-10-25 From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has a shred of evidence connected... NCIS Season 9 :Episode 7 Devil's Triangle Devil's Triangle 2011-11-01 From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has a shred of evidence connected... NCIS Season 9 :Episode 8 Engaged (1) Engaged (1) 2011-11-08 From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has a shred of evidence connected... NCIS Season 9 :Episode 9 Engaged (2) Engaged (2) 2011-11-15 From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has a shred of evidence connected... NCIS Season 9 :Episode 10 Sins of the Father Sins of the Father 2011-11-22 From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has a shred of evidence connected... NCIS Season 9 :Episode 11 Newborn King Newborn King 2011-12-13 From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has a shred of evidence connected... NCIS Season 9 :Episode 12 Housekeeping Housekeeping 2012-01-03 From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has a shred of evidence connected... NCIS Season 9 :Episode 13 A Desperate Man A Desperate Man 2012-01-10 From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has a shred of evidence connected... NCIS Season 9 :Episode 14 Life Before His Eyes Life Before His Eyes 2012-02-07 From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has a shred of evidence connected... NCIS Season 9 :Episode 15 Secrets Secrets 2012-02-14 From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has a shred of evidence connected... NCIS Season 9 :Episode 16 Psych Out Psych Out 2012-02-21 From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has a shred of evidence connected... NCIS Season 9 :Episode 17 Need to Know Need to Know 2012-02-28 From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has a shred of evidence connected... NCIS Season 9 :Episode 18 The Tell The Tell 2012-03-20 From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has a shred of evidence connected... NCIS Season 9 :Episode 19 The Good Son The Good Son 2012-03-27 From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has a shred of evidence connected... NCIS Season 9 :Episode 20 The Missionary Position The Missionary Position 2012-04-10 From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has a shred of evidence connected... NCIS Season 9 :Episode 21 Rekindled Rekindled 2012-04-17 From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has a shred of evidence connected... NCIS Season 9 :Episode 22 Playing with Fire Playing with Fire 2012-05-01 From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has a shred of evidence connected... NCIS Season 9 :Episode 23 Up in Smoke Up in Smoke 2012-05-08 From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has a shred of evidence connected... NCIS Season 9 :Episode 24 Till Death Do Us Part Till Death Do Us Part 2012-05-15 From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has a shred of evidence connected...