Five years after being hospitalised, Derek is released into the care of his cousin, April. But Derek believes he's possessed, and a series of encounters leaves April to question if this is mental illness or something more sinister.
The brilliant and eclectic team of U.S. NCIS Agents and the Australian Federal Police (AFP) are grafted into a multi-national taskforce to keep naval crimes in check in the most contested patch of ocean on the planet.
