Omschrijving

Realising his secret girlfriend Dorothy's pregnancy will sour her relations with her ultra-rich father, career-minded Philadelphia student Jonathan Corliss coolly murders her, making it look like suicide. He then moves to New York to woo her twin sister Ellen. All seems to go well for him, although Ellen's continued investigations into what she is convinced was not a suicide forces him to kill again.

https://www.imdb.com/title/tt0102220/