After a false start at Fox Studios, Shaw's film career got under way at Warner Bros. in 1934, where she played secondary parts in such musicals as Sweet Adeline (1934) and Ready, Willing and Able (1937). (rottentomatoes.com)
Bruce enjoyed solid secondary parts in such films as Night Has 1000 Eyes (1948), and was quite effective as Kim Novak's mother in her last film, Strangers When We Meet (1960). (rottentomatoes.com)
That is also sublime and beautiful and we are dealing with a whole, a whole that is in many ways greater than the sum of its primary and secondary parts. (faith.org.uk)