《副手》讲述的是：　　Jimmy Sutton, tricky publicist for Consolidated Pictures, fetches teacher Trudi Hovland from snowy Minnesota to sunny Hollywood to test for the film of the best-seller "Girl of the North" - having come 436th in a competition several years earlier she is now next choice as leading lady. She gets the part, but despite his own growing attraction for her Jimmy deviously manufactures a romance between her and Roger Maxwell, a new star who desperately needs to pep-up his image.