S.O.S. COAST GUARD (1937) Trailer - B&W

S O S Coast Guard is a 1937 Republic film serial. It was the seventh of the sixty-six serials made by Republic. The plot concerns the mad scientist Boroff (Bela Lugosi) attempting to sell a superweapon to the highest bidder, opposed by Coast Guard Lieutenant Terry Kent (Ralph Byrd), for both personal and professional reasons.

The main stars were Bela Lugosi and Ralph Byrd. It was made during the 2-year period when the Hayes Office put a moratorium on horror movies, Lugosi's usual genre, and in the midst of Byrd's notoriety for the highly popular Dick Tracy serials.