Greg Zola

When a Navy commander, who was a technical advisor to a civilian contractor creating a handheld sonar scanner, is found dead on the beach, the NCIS team investigates the murder using satellite technology.

Rush confronts an old case that Vera was unable to solve involving a serial rapist who preys on single women. When the rapist sends a letter to the detective squad announcing he's returned to Philadelphia after a five-year absence and plans to strike again, Rush and Vera attempt to catch the criminal before he acts.

Don needs Charlie's help to find out why the daughter of a mathematician is kidnapped.

When an intruder breaks into the home of a deaf family and fatally shoots their teenage daughter, Mac works with the grieving mother who relies on her other senses to provide clues that will help catch her daughter's killer. Along the way she also provides assistance to Mac as he struggles in his relationship with Peyton. Meanwhile, Stella and Danny investigate when a professional ice skater is killed prior to competing in the U.S. ice skating regional's. (TV-14)

A mysterious death pushes Claire into the spotlight; Angela worries that Nathan will discover his true identity; an unexpected visitor haunts Matt; H.R.G. and Tracy join forces.