"Entropy" is the 18th episode of season 6 of the television series Buffy the Vampire Slayer. Plot The Trio, riding ATVs, pursue two vampires through a cemetery; one of them throws a tree branch at Andrew, causing him to fall off and the others to crash. The vampires encounter Buffy and they fight. One vampire drops the mysterious disk that the Trio were after; Warren snatches it and the Trio escapes, unseen by the Slayer. As Buffy fights, Spike seizes one of the vampires and offers to stake him, provided that Buffy agrees to tell the Scooby Gang about their sex life. Buffy stakes both vampires without Spike's help and dares him to spill the beans himself; since her friends have forgiven her attempt to kill them a little dalliance is unlikely to make them hate her. The next day, Willow waits for Tara outside of her classroom and the two talk and plan a coffee date. Buffy and Dawn stroll downtown, but there are very few stores where Dawn can show her face: she has confessed to shoplifting at most of them. They chat about all of the things Dawn stole and how they are working to remedy the whole problem. Jonathan works on a project involving the disk they stole as Warren watches over, eager for it to be complete. While Jonathan finishes his work alone, Warren and Andrew Wells talk about their inability to trust Jonathan and how soon they will not need him anymore. That evening, Xander comes home from work and finds Anya at his apartment waiting for him, having hid behind the bushes as he left the building the previous day. Xander tries to apologize for walking away from their wedding. There is a glimmer of hope for them until Xander says he wanted to stop the wedding before it happened. Taken aback, Anya asks Xander what he meant by that remark and asks if he still wants to marry her. Xander admits to loving her dearly and wanting to be back with her, but he is still too afraid of himself to marry her. With her back turned to Xander, she reveals her vengeance demon face and angrily begins to wish him physical harm – but nothing happens. Anya morphs back into her human face and, upset that her powers did not work, she leaves while a confused Xander looks on. The next