Bree's trial finally comes to an end with a surprise confession; Tom takes steps to finalize his divorce.
The team delves into the surprisingly cutthroat world of academics in a case involving a graduate student at a natural history museum.
The death of a NCIS agent leads Gibbs and Tony into the desert to locate a woman who holds the answer to the mystery.
A tornado touches down on a murder scene, damaging the evidence and putting Ryan and Walter in grave danger.
The murder of a recently released convict forces Callen to go undercover with an old alias.
