Best Thriller movies of 1975 that are oscar winners or nominees

Actors : Lorraine Gary, Roy Scheider, Richard Dreyfuss, Robert Shaw,
Directors : Steven Spielberg,

A giant great white shark arrives on the shores of a New England beach resort and wreaks havoc with bloody attacks on swimmers, until a local sheriff teams up with a marine biologist and an old seafarer to hunt the monster down.

Actors : Robert Redford, Faye Dunaway, Max von Sydow, Cliff Robertson,
Directors : Sydney Pollack,

A bookish CIA researcher finds all his co-workers dead, and must outwit those responsible until he figures out who he can really trust.

Actors : Burgess Meredith, William Atherton, Karen Black, Donald Sutherland,
Directors : John Schlesinger,

An art director in the 1930s falls in love and attempts to make a young woman an actress despite Hollywood who wants nothing to do with her because of her problems with an estranged man and her alcoholic father.

Actors : Robert Mitchum, John Ireland, Charlotte Rampling, Sylvia Miles,
Directors : Dick Richards,

Los Angeles private eye Philip Marlowe is hired by paroled convict Moose Malloy to find his girlfriend Velma, former seedy nightclub dancer.