As the team searches for a vigilante killer in Cleveland, Rossi's former Marine sergeant goes missing in Los Angeles and J.J.'s secret catches up with her.
The team searches for a killer who calls the authorities before committing his crimes, as Rossi prepares for a visit with his daughter, he gets news about the death of an old friend.
A witness agrees to testify against a gang member after a community activist is gunned down; TV host Bill O'Reilly criticises the police department.
The NCIS team takes on a renowned hacker who could hold the key to tracking down the most-wanted cyber-terrorist in the world.