Ruth McDevitt is one of the more persistent actresses of her generation with a filmography that reaches back further than most viewers remember. The role of Mrs. MacGruder in 'The Birds' is the one that keeps being brought up. 'The Parent Trap' counts among the more visible credits. Casting directors have gone to her for horror more than for anything else. There are 39 entries on the filmography, most of them supporting work in other people's stories. Read more