Tyrol and Cally's relationship becomes even more strained. Cally soon attempts to spy on him, believing he is having an affair. She catches him talking to Tory Foster at Joe's bar. Afterward, she finds a note from Saul Tigh. She follows Tyrol again, where she eavesdrops on the meeting between Tyrol, Tory and Tigh. To her horror, she soon learns that they are Cylons. When the group breaks apart, Tory is the last one out of the compartment and notices an out of place tile, leading her to believe that someone listened in on their conversation. Cally rushes to her quarters to beat Tyrol back and when his guard is lowered, knocks him out with a wrench. Cally proceeds to grab her son Nicky, and attempts to commit murder-suicide by having her and her child vent into space in a launch tube. Tory follows and attempts to talk Cally into not doing it, since they had no idea they were Cylons until the Ionian Nebula, and that they are not evil. Eventually, Tory takes the baby and knocks Cally out. After she regains consciousness, Tory, holding the baby in another room, presses the launch button, venting Cally into space. Later, Admiral Adama gives Galen the bad news that Cally is dead. Cultural references The weapons locker where the final four members secretly meet is marked "1701D", which is the registry number of the Star Trek: The Next Generation era Starship Enterprise. When Six's fleet is ambushed by Cavil's, the Orion constellation (as seen from Earth) can be seen in the background stars (approximately at 28:22 minutes into the episode). Whether this was intentional and signifies something is unknown. It may also indicate that the Galactica crew, as well as the Cylons, are getting closer to the Sol System. The Orion, as well as other familiar constellations would be seen more frequently in the episodes that follow. Reception Total viewership for "The Ties That Bind" mostly held steady from the previous week's new episode, "Six of One". The episode garnered 1.741 million viewers for a 1.1 household rating and 2 percent share, down just 60,000 viewers from the week before. In the important 18-to-49-year-old demographic, viewership fell by 12 percent to just 800,000 viewers (a 0.8 household rating and 3 percent share of this demographic). One source estimated that fewer than 500,000 additional viewers watch the show on DVRs, because the