shown confiding many times, once even likening her to being his "wife." The two were never more than very good friends, as the show's producers see them as more of brother and sister than lovers. Catherine has many times encouraged Grissom to be more open and less self-absorbed, and to pursue something with Sara Sidle. Grissom has been allegedly involved with forensic anthropologist Teri Miller and with S&M parlor operator Lady Heather, whose "safeword" it has been suggested that he knows—however, as all he says is "Heather, stop!" and "I'm saying stop," he evidently does not use it, as "stop" is never a "safeword". Rather, this is a reference to the episode "Lady Heather's Box", in which she reminds Grissom that the submissive is in control; Grissom tells her when they begin kissing, "You can always say stop," and she replies, "So can you." Sara Sidle Since the first season, there were hints that both Sara Sidle and Grissom were interested in each other romantically. In fact, the show's creators made Sara Sidle while thinking of a future love interest for Grissom, but during the show's first three seasons, Grissom flirted with all the female characters, and when Sara asked him out to dinner, he rejected her, claiming that he did not know what to do about what is going on between them. In season four, Grissom's true feelings are revealed in "Butterflied", an episode that centers entirely around him discovering his sentiments for Sara. It was then that he admitted not being able to risk his career to be with her. In season four, Sara apparently develops a drinking problem, which Grissom acknowledges on the season finale; after this, they would hardly see each other, and Grissom becomes interested in detective Sofia Curtis. In mid-season five, Sara is suspended for insubordination and she reveals to Grissom her tormented childhood. He refuses to fire her and has her working in every case of the next two seasons with him. It was not until the sixth season finale that it is revealed that Grissom and Sara have worked through whatever issues they had, and are, in fact, a couple, and have been for two years. This revelation caused mixed reviews among critics, some of them see this relationship as CSI "jumping the shark," an attempt to include more drama and romance to the show, so as to be able to compete