You have probably seen the previews for the new movie It Runs in the Family.

The publicity highlights the movie’s two stars, son and father Michael and Kirk Douglas:

What is left unmentioned is that there are actually four members of the Douglas family the film: the other two are Michael’s son Cameron and Michael’s mother (and Kirk’s ex-wife) Diana (highlights are mine):

I assume that some sort of complicated Hollywood rules prevent the mention of these other Douglas family members without mentioning the other non-Douglas cast. But I gotta say, the promotion would be far more effective if it highlighted this “art imitating life” aspect of the picture.