Season 4, Episode 9 Twisted Sister
First Aired: November 21, 2006
McGee's teen sister (Troian Bellisario) comes to his apartment covered in blood, with no memory of what happened to her. When he goes to her college to look for answers, he sees the team there inspecting the body of a dead sailor and imagines the worst. Carolyn: April Matson. Madison: Katherine Bailess.
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- Premiered: September 23, 2003
- Rating: TV-14
- Premise: A successful "JAG" spin-off about criminal cases involving Navy and Marine personnel, handled by the Naval Criminal Investigative Service. For the second season, the series title was shortened from "Navy NCIS" to "NCIS." (more)
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Agent Gibbs (Mark Harmon) has a lot of rules – some are actually useful in real life.