The NCIS team has tackled hundreds of dangerous and high-profile cases over the past 14 years—from chasing terrorists overseas to stopping serial killers domestically. But perhaps some of the most notable takedowns happened when they weren't themselves, at all!
Remember when Gibbs disguised himself as a computer whiz? What about the time McGee paraded around as a literary ladies' man?
Let's take a look back at some of the most memorable times the agents adopted different identities and went undercover on NCIS.
Watch NCIS on Tuesdays at 8/7c on CBS and CBS All Access.