Plot hole: By the time O'Halloran phones Roberts, who is in the promenade room, and tells him of their plan to blow the water tanks, over 50 of the floors below the promenade room, along with the roof which is also ablaze, have been destroyed by the fire. So surely the phone lines would have been destroyed as well, making a phone call to the promenade room impossible.
mightymick
4th Apr 2013