In this early disaster film, the tough-minded and strict Los Angeles Harbormaster must use his courage and wits when the communists announce they have planted an atomic bomb on a freighter. It will detonate in 12 hours. Now, the harbormaster must not only save the city, he must keep his actions mum to prevent mass hysteria. He quietly tows the vessel out to sea where it explodes. ~ Sandra Brennan, Rovi