Rock Hudson and Doris Day had one of the sweetest chemistries in the movies--as demonstrated in several light comedies, including this film's predecessor, 1959's Pillow Talk. The two similar films feature a handsome, duplicitous Hudson duping--then falling for--an earnest Day. In Lover Come Back, the two play Jerry Webster and Carol Templeton, rival advertising agents, vying for the same clients--until Jerry makes up a product, Vip, to get out of a scrape.