I liked this film very much. However I take issue with the credit 'Story by T.K. Brown.' This is NOT an original story; it was lifted from the play 'Outward Bound' by Sutton Vane.
Having given credit where it is due, the premise is very simple: Seven (7) vacationers are on an airplane bound for a mysterious resort called 'The Portals of Eden'. A newlywed couple, a married woman in recovery from a nervous condition; a Clergyman experiencing a crisis of faith; a businessman on the wrong plane; a single, insecure woman; A lusty man traveling alone whose marital status is in question. They are all about to experience the vacation of a lifetime...
Viewing this film 40 years later, I am sentimental because I love the entire cast: they are immortalized in their prime and I thought they all did a terrific job. Robert Reed is the stand out for me; his character, the Reverend Fellows, is mostly in the background until the last 20 minutes or so. It is Mr. Bridges's, Ms. Leachman's and Mr. Asner's characters who move the story forward throughout most of the film with the participation of Ms. Francis's, Ms. Mills's and Mr. Bill's characters who are all followers.
Mr. Reed then takes the helm and his character provides a most powerful and moving soliloquy vital to the plot to help the story towards closure.
I found this movie a bit 'Haunting' as the title suggests; it does what a good movie should do, it stays with you after it is over. I give this a 9 out of 10.