NCIS: Season 3, Episode 9

3 - 9: Frame-Up

A pair of legs are found on a Marine base, and the team is dumbfounded and shellshocked when every piece of evidence in a murder points towards Tony as the prime suspect. In an effort to help their colleague, the team compiles a list of people who may have grudges against Tony, providing them with a long list of suspects. Abby is upset that she may have incriminated Tony through the forensic evidence she provided and refuses to give up until she's proved his innocence.