Lilith

This forgotten, totally under-appreciated film from 1964 is very powerful (I believe it was Robert Rossen's last film). Strangely hypnotic and frightening in a very subtle way, this showed Beatty three years before B&C showing the potential he had in Splendor in the Grass. He also met Gene Hackman while making this and later cast him as his brother in B&C which launched Hackman.

There is also a splendid performance from Peter Fonda, of all people. As Hackman's wife, Jessica Walter showed how amazing she was at a relatively young age and just never got the right parts in decent films. You'll also see a young Rene Auberjenois and Olympia Dukakis in a bit part. I hope more people look into this devastating piece on mental illness.