I just got around to seeing SotN. According to IMDb it refers to at least 8 different Hitch films, often very extensively: https://www.imdb.com/title/tt0084732/movieconnections?ref_=tt_ql_trv_6
But I noticed many other references, including to Strangers on a Train, to both of Cat People (1942)'s key sequences, and to Laura (1945).
While the film has the occasional satisfactory jump-scare, the whole thing is incredibly inert & mainly serves to point out the shortcomings of the director, writer, and stars alike compared to their originals. Scheider & Streep are both pretty bad (and seemingly miscast) and all supporting players are thoroughly uncharismatic. This suggests overall directorial malpractice and casting insanity by Robert Benton I'm afraid. Lost his bearings after hitting bigger than big with Kramer vs. Kramer perhaps.
I haven't seen Still of the Night since its release, but I recall being disappointed by it. Streep had too much of the "grande dame" reputation back then to play a regular thriller star, and Scheider's star was always wobbly(he turned down Family Plot over his new Jaws stardom, but that didn't hold much more than a decade, with only All That Jazz as a true classic.)
Brian DePalma made a funny remark about that movie. He said that one reason he DID put women in jeopardy is that men are less easily menaced on the screen. He said a scene in Still of the Night with Schedier menaced in the dark by a killer was silly -- "Schedier killed Jaws, after all!" (I don't hold with DePalma's theory that only women are properly menaced and murdered in movies -- Exhibit A: Arbogast.)
Robert Benton made his name with Bonnie and Clyde(very much influenced by Truffaut AND Hitchcock at the time) with his partner David Newman, but went on solo to do Kramer vs. Kramer.
I love two "smallish" Benton noir thrillers: Nadine(1987) and The Ice Harvest(2005.) They are films about small time criminals in small town America -- but people get murdered and the danger is real. I recommend those two.
I remember the at time reading that Streep only took the role as a 'thank you' to Benton for casting her in K vs K.
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Yes. Actors and actresses do that a lot.
Example: Sandra Bullock did "Speed 2"(while Keanu Reeves passed) because she said the director "gave me my career" when he picked her for Speed.
Example: Julia Roberts thanked directors Garry Marshall(Pretty Woman) and Steven Soderbergh(Erin Brockovich) by appearing in other films for them.
Example: After James L. Brooks gave Jack Nicholson Oscar winning roles in Terms of Endearment and As Good as it Gets, Nicholson (looking terrible, in a terrible film) did "How Will I Know" for Brooks (Nicholson's final film to date.) Nicholson also did an unbilled cameo in "Broadcast News" for Brooks.