Their next film was "The Oath" (1920), of which Cooper took control from casting to costumes. Cooper said she loved everything about the film, however, it received the worst reviews of her career and was one of Walsh's only silents to lose money. Cooper was deeply hurt by the failure. Their next film, "Serenade", was fully under Walsh's control and was their most profitable. However, Cooper hated acting opposite Walsh's brother George, who she felt was stiff. Walsh agreed and they were never paired together again.