Classic TV - One Step Beyond - "Night of April 14th" (1959)

A young Englishwoman is suddenly wracked by dreams of drowning in the ocean. She is stunned when her fiancée tells her that he has prepared a surprise honeymoon trip for them--they're sailing to New York on the passenger liner Titanic.
https://www.imdb.com/title/tt0507795/?ref_=fn_al_tt_1

This video is in the Public Domain.