Ep 4. Cash Flow

Callen and Sam of the NCIS: Los Angeles team continue to work together on a new case in episode four of season 12 titled "Cash Flow." This episode revolves around the discovery of a money laundering network that has ties to the Department of Homeland Security.

As the NCIS team looks into the case, they begin to unravel a complex web of deception that involves a DHS agent who is secretly working with a gang of professional thieves. The thieves use their skills to rob high profile targets and easily move the stolen money around through an offshore network of shell companies.

The NCIS team is quickly pulled into action when a series of bank heists take place in the city. The thieves are operating with precision and the money they are stealing is disappearing quickly. As Callen and Sam delve deeper into the investigation, they realize that this is no ordinary gang of criminals.

The first clue they uncover is the use of a highly specialized piece of equipment that was used in one of the bank robberies. This leads them to investigate a company that specializes in securities and private banking. The firm is owned by a man who was once a respected businessman, but who has recently turned to a life of crime.

The episode also sees the team come across an old adversary who has returned to LA to get revenge on them. Tahir Khaled, who was a thorn in NCIS's side in previous seasons, is now working with the same gang of thieves that the team is trying to apprehend. This adds an additional layer of complexity to the story as the NCIS team has to deal with a personal grudge that may be clouding Khaled's judgement.

As the team works to bring the money laundering network to justice, they face several challenges, including dealing with international laws and a possible mole within the Homeland Security agency. They also have to navigate their own personal relationships, including the strained connection between Callen and his father.

Overall, "Cash Flow" is a high-octane crime thriller that showcases the intelligence, resourcefulness, and grit of the NCIS: Los Angeles team. The episode takes viewers on a wild ride through the shadowy world of international finance and showcases the dangers that come with investigating powerful criminals.