This film could have been titled “There Will Be Beef.”
Alfred Hitchcock has always preferred visuals to dialog, yet "Family Plot" opens on a talkative note. A medium, the slightly spaced-out Madame Blanche, is holding a seance with an eccentric old lady. They're in the old lady's parlor, surrounded by antiques and heirlooms and an abundance of deep shadows, and the old lady is involved in this incredibly complicated tale about events of years ago.
It appears that her late sister had an illegitimate child and, times being what they were, the child was given up for adoption. Then the sister died, and the child was lost track of, and now the old lady is afraid of dying and wants to make amends by willing her vast fortune to the child. Madame Blanche's assignment: Find the missing nephew. He'd be almost 40 now.
If this were to be a routine story, the medium no doubt would recruit someone to play the missing nephew, and they'd share the vast fortune. But, no, this is a Hitchcock, so that would be far too simple. Madame Blanche does the unexpected thing: She sets out to find the nephew. And, as wonderfully played by Barbara Harris, she has such a sweet and simple faith in the possibility of everything that we almost think she's right. She enlists the aid of her rather slow-witted boy friend (Bruce Dern), a cabdriver and sometime actor. He'll do the detective work, she'll keep the old lady happy and they'll share a $10,000 reward.
Now comes a nice touch. As Blanche and her boy friend drive home in a cab, they almost run down a woman. They miss and drive on, but the camera follows the woman. She is, inevitably, the wife of none other than the missing nephew. And the two of them are involved in a series of kidnappings with precious jewels as the ransom.