Complex sentence: The last CBS episode of "The Edge of Night" on November 28,1975 ended with the discovery that Nicole Travis Drake was alive, after she had been presumed dead in an explosion eighteen months earlier while on a boating trip with her husband Adam Drake.
Split into simpler sentences: The last CBS episode of "The Edge of Night" on November 28,1975, ended with the discovery that Nicole Travis Drake was alive. She had been presumed dead in an explosion during a 1974 episode of the show while on a boating trip with her husband Adam Drake.