A.J. Castro

The NCIS team searches for a homegrown terrorist after a rescue mission in Syria reveals an American was involved in the capture of a social worker. Meanwhile, McGee and Bishop question DiNozzo's unusual behaviour.

The residents assist in rescuing the victims of a horrific multi-vehicle accident. Carla receives some devastating news.

Callen's actions have left the team shaken and divided, while Hetty tries to adjust to retirement life.

Grace unintentionally meets Noah's daughter Katie. Will's mother Marilyn visits after the death of her beloved dog, but doesn't receive the emotional support she expects. Jack argues with his rec centre boss, Theo.

Mayor Neil rolls out a new safety initiative as Arpi trains him for his most challenging task yet; Mikaela and Tommy realise the clock is ticking for them to find love.