1980s movie where a woman plots to kidnap an elderly millionaire

A couple, cheated by a vile businessman, kidnap his wife in retaliation—without knowing that their enemy is delighted they did.

To stop his mother from marrying a man he doesn't like, a young millionaire hires an ex-con in helping him fake his own kidnaping.

A spoiled rich girl hatches a plot with her hippie friends to "kidnap" her so they can get a large ransom from her wealthy father.

A man impersonates a nanny to infiltrate a millionaire's household and steal his fortune.

Three friends kidnap the daughter of a millionaire and plan to ask for a big ransom. They hide out on the farm of a family in the backwoods, and find that they're in for more than they bargained for.

An elderly millionaire manipulates an avant-garde writer and a happily married man.

An elderly businessman (Frank Morgan) plans what he thinks is an innocent night on the town while his wife is away. Instead, he finds himself involved in a showgirl's murder.

A Beverly Hills housewife suspects that her husband of thirty years is trying to kill her.

The aging villain Émile Morland talks his old friend Aristide into helping him with to kidnap the son of a millionaire.

plot is unknown