NCIS S04E09:

Twisted Sister

IMDb 7.9 60 min/episodeRelease:2003
At 02:30 Tim's little sister, Sarah, shows up at his pad, saying that she thinks that she's killed someone (a Navy seaman). Gibbs and the gang find much circumstantial evidence implicating her, but they solve it and nab those responsible.
Director: Terrence O'Hara