Allison got in a lawyer line about first year law school, and truth being over-rated, which could have been the tag line for this episode, wherein the real killer walks. [Also: Tony, at the end, is off to see 'Rashomon,' the Kurosawa film in which truth is interpreted from different perspectives. There is no single, absolute truth, just variations. "The Seven Samurai" also appeared in a clip.]
IPBiz query: is this the first NCIS episode wherein NCIS knowingly let a murderer off the hook?
Don't forget that Allison, within the context of her first appearance, did patent prosecution work. Think she's a registered patent attorney?
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NCIS Feb. 2 "Masquerade" brings back M. Allison Hart
Some NCIS fans really do not like the Allison character; patent law issue?