NCIS Database

Seadog is the third episode in NCIS Season 1 and the 3rd episode of the entire NCIS series.


When the body of a Navy Commander washes up on a beach along with the bodies of two drug dealers, the NCIS team investigate and soon discover it might be linked to a potential attack against the United States which if successful could leave the country without any electricity.


Act One

Act Two

Act Three

Gibbs after learning from FBI Special Agent Tobias Fornell that the killers they're looking for aren't drug dealers: they're terrorists.

Act Four


Series Regulars

Name Portrayed by Role
Leroy Jethro Gibbs Mark Harmon An NCIS Special Agent in charge of the main NCIS Major Case Response Team.
Anthony DiNozzo Junior Michael Weatherly The Senior Agent of the main NCIS Major Case Response Team and also the second-in-command of the team.
Caitlin Todd Sasha Alexander A Secret Service Agent previously assigned to the Presidential Protection Detail on Air Force One and who is now an NCIS Special Agent as well as Tony DiNozzo's partner.
Abigail Sciuto Pauley Perette A Goth who is also the Chief Forensic Scientist for the NCIS Major Case Response Team.
Donald Mallard David McCallum NCIS's Chief Medical Examiner.

Recurring Cast

Name Portrayed by Role
Thomas Morrow Alan Dale Director of NCIS.
Charlie (Yankee White) Gregory Itzin Director of the Federal Bureau of Investigation.
Gerald Jackson Pancho Demmings Assistant Medical Examiner for NCIS.
Tobias Fornell Joe Spano Agent with the FBI.

Guest Cast

Name Portrayed by Role
Kent Fuller William R. Moses An agent with the Drug Enforcement Agency.
Darryl Wilkins Joe Torry African-American gang leader.
Frank Trujillo Benny Nieves Gang leader and Wilkins's rival.
Diane Fontaine Elena Lyons Reporter.
Marcy Carruthers Merle Dandridge Agent with the United States Secret Service and one of Kate Todd's friends.
Bobby Jackson Sam Sarpong One of the players that Gibbs confronts in the temporary vacant basketball court.
Dave Simmons Chris Olivero A college student.
Sarah Fuentes Melissa Lee Another student at the beach party.
Seth Shakir Homie Doroodian A terrorist.
Jenny Jodi Bianca Wise One of the girls Tony interviews about the boat.
Nancy Emilie de Ravin Jenny's friend.
Carlos Miguel A. Gaetan A man who appears in the episode. Uncredited role.
Tom Bradstone Dar Dixon Captain in the U.S. Army and also an Army CID Officer.
Linn Mark Holton Sergeant in the U.S. Army.
Basketball Player Dempsey Pappion A man who appears in the episode.
Office Girl Julie Berlin Uncredited role.
  v - e - dNCIS Season 1
Ice Queen (episode) (JAG)Meltdown (episode) (JAG)NCIS: The Beginning (episode) (JAG)Yankee White (episode)Hung Out to Dry (episode)Seadog (episode)The Immortals (episode)The Curse (episode)High Seas (episode)Sub Rosa (episode)Minimum Security (episode)Marine Down (episode)Left for Dead (episode)Eye Spy (episode)My Other Left Foot (episode)One Shot, One Kill (episode)The Good Samaritan (episode)Enigma (episode)Bête Noire (episode)The Truth Is Out There (episode)UnSEALeD (episode)Dead Man Talking (episode)Missing (episode)Split Decision (episode)A Weak Link (episode)Reveille (episode)