NCIS Special Agent Ryan Gilmour finds himself back at the New London submarine base, the result of a posting swap with a friend. He settles in to wait for a chance to lead an investigation and for a woman who can capture his fickle heart.
When a vandal carves a Morse code message onto a building on the base, Ryan crosses paths with librarian Alex Ware. Her ability to avoid answering his questions leaves Ryan convinced she is hiding something. Determined to find out what it is he seeks her out, but his persistence only leads to conflict and frustration.
As a second act of vandalism rapidly follows, and then a third, Ryan is given the lead in the investigation. The attacks become sinister, the trail of Morse code messages with each act taunting Ryan and his team, daring them to break the code before it's too late. And at every turn is the elusive Alex Ware.
Will Ryan and his team find the key to solving the case? Will Alex let down her guard and tell Ryan her secret?
Can they uncover who is behind The Code?