Question: Gene Gutowski was a producer of the 1965 film starring which actress?

Context paragraphs:
Never Say Never Again: Never Say Never Again is a 1983 James Bond spy film starring Sean Connery, directed by Irvin Kershner, produced by Jack Schwartzman, and written by Lorenzo Semple Jr. with uncredited additional co-writers Dick Clement and Ian La Frenais, from a story by Kevin McClory, Jack Whittingham, and Ian Fleming.  It is the second adaptation of Fleming's "Thunderball", which was previously adapted as the 1965 film of the same name.  Unlike the majority of James Bond films, "Never Say Never Again" was not produced by Eon Productions, but by an independent production company, one of whose members was Kevin McClory, one of the original writers of the "Thunderball" story, who retained the filming rights of the novel following a legal dispute over them.

The Fool Killer: The Fool Killer is a 1965 film starring Edward Albert and Anthony Perkins.

David Westheimer: David Westheimer (April 11, 1917 in Houston, Texas – November 8, 2005) was an American novelist best known for writing the 1964 novel "Von Ryan's Express" which was adapted as a 1965 film starring Frank Sinatra and Trevor Howard.

The Slender Thread: The Slender Thread is a 1965 film starring Anne Bancroft and Sidney Poitier.  It was the first feature-length film directed by Academy Award-winning director, producer and actor Sydney Pollack.

Harum Scarum (album): Harum Scarum is the twenty-fourth album by American singer and musician Elvis Presley, released by RCA Victor in mono and stereo, LPM/LSP 3468, in November 1965.  It is the soundtrack to the 1965 film of the same name starring Presley.  Recording sessions took place at RCA Studio B in Nashville, Tennessee, on February 24, 25, and 26, 1965.  It peaked at number eight on the Top LP's chart.

Repulsion (film): Repulsion is a 1965 British psychological horror film directed by Roman Polanski, and starring Catherine Deneuve, Ian Hendry, John Fraser and Yvonne Furneaux.  The screenplay was based on a scenario by Gérard Brach and Polanski.  The plot focuses on a young woman who is left alone by her vacationing sister at their apartment, and begins reliving traumas of her past in horrific ways.  Shot in London, it was Polanski's first English-language film and second feature-length production, following "Knife in the Water" (1962).

The Fearless Vampire Killers: The Fearless Vampire Killers, or Pardon Me, But Your Teeth Are in My Neck (shortened to The Fearless Vampire Killers; originally released in the UK as Dance of the Vampires) is a 1967 horror comedy film directed by Roman Polanski, written by Gérard Brach and Polanski, produced by Gene Gutowski and co-starring Polanski with future wife Sharon Tate.  It has been produced as a musical named "Dance of the Vampires".

That Darn Cat (1997 film): That Darn Cat is a 1997 American mystery comedy film starring Christina Ricci and Doug E. Doug.  It is a remake of the 1965 film "That Darn Cat! ", which in turn was based on the book "Undercover Cat" by Gordon and Mildred Gordon.  It is directed by British TV veteran Bob Spiers (most famous for "Fawlty Towers", as well as "Spice World") and written by Scott Alexander and Larry Karaszewski, best known for "Ed Wood" and the first two "Problem Child" films.

Gene Gutowski: Witold Bardach (July 26, 1925 – May 10, 2016), better known as Gene Gutowski, was a Polish-American film producer who produced many of Roman Polanski's films, including "Repulsion" (1965), "Cul-de-Sac" (1966), "The Fearless Vampire Killers" (1967), and "The Pianist" (2002).

Fantômas se déchaîne: Fantômas se déchaîne (] , English: "Fantomas Unleashed" ) is a 1965 film starring Jean Marais as the arch villain with the same name opposite Louis de Funès as the earnest but outclassed commissaire Juve and the journalist Fandor, also played by Marais.  It was France's answer, with the Fantômas trilogy starting in 1964, to the James Bond phenomenon that swept the world at around the same time.  It is the second in the trilogy of Fantômas films, that became extremely successful in Europe and Soviet Union and found success even in the United States and Japan.  In this episode Jean Marais also plays professor Lefebvre.

Supporting paragraphs: Gene Gutowski Repulsion (film)
Answer: Catherine Deneuve