 FAKE: Towards the end of the movie, three red drones are hunting  Tallis in a sewer. The water level is only knee deep. Tallis dives  under the water’s surface and the shot shows him swimming in water  that is waist deep to the drones. The next shot shows Tallis coming  up out of the water behind the last drone and killing it. However  the water level is only knee deep. Tallis then ducks back under the  water and we see a shot of him swimming around again in water that  is at least waist deep.