Allen Theosky Rowe

When the father of a dead girl mentions the name Dennis Lee, Olinksy sets out to bring down one of Chicago's most wanted fugitives and people traffickers, once and for all. Meanwhile, Sean has an altercation with a fellow officer, and Platt helps Nadia prepare for a polygraph test.

An organised crime leader attempts to buy stolen defence technology, while Deeks is kicked out of NCIS training only to learn that Hetty has a life-changing surprise for him.

The NCIS team's murder investigation of a man who sold military information leads to the abduction of a doctor whose cutting-edge neurotechnology could be developed into advanced weaponry; Callen tries to have an important talk with Arkady.

Deeks struggles during training while the team investigates the murder of a man about to reveal the source of a counterfeiting operation, leading to an old acquaintance becoming their prime suspect and revealing the true reason for her return.