Trip begs Bree to tell him what really happened the night of Alejandro's murder as her trial begins to go south and it looks like she's about to be convicted.
Lisbon and Jane enter the murderously competitive world of academia when a research student pays the ultimate price for discovering a new species of moth.
When a fellow agent is murdered, the NCIS team heads into the desert to locate a woman who might hold the answer to the mystery.
The murder of a recently released convict forces Callen to go undercover solo as an old alias, while Sam and the LA team track him from a distance.
The team have to pick up the pieces when a violent storm blows away a dead body and all of the surrounding evidence.