In the opening scene in Istanbul, Arabian background music is heard but it should have been Turkish music instead since Istanbul is a Turkish city.
When The First (masquerading as Drusilla) speaks to Spike, she touches his hair and cheek, but The First is unable to touch anything. However, since Spike is still mentally unstable after getting his soul back, it is possible that he's just imagining Drusilla is touching him.
When Buffy rolls backwards with the zombie woman on top of her, the zombie woman's top moves up to reveal her very non-dead regular person stomach.
When Halfrek and Anya are at the Espresso Pump, Halfrek says, "Listen, Anya, I know I've been a little competitive with you, there was that thing during the Crimean War, we laugh about it now, but the fact is I've actually always looked up to you."
But there's a problem. In the 1880 scene from "Fool for Love," a still human William the Bloody expresses his love to a woman named Cecily. Cecily and Halfrek are played by the same actress. And in "Older and Far Away," it is implied that Halfrek the Vengeance Demon and Cecily are the same person. (Hallie recognizes Spike as William to which Spike replies, "Hey, wait a minute.")
The Crimean War was nearly thirty years before William expresses his love to Cecily. So, if Halfrek was a vengeance demon during the Crimean War, she couldn't possibly be Cecily.
But there's a problem. In the 1880 scene from "Fool for Love," a still human William the Bloody expresses his love to a woman named Cecily. Cecily and Halfrek are played by the same actress. And in "Older and Far Away," it is implied that Halfrek the Vengeance Demon and Cecily are the same person. (Hallie recognizes Spike as William to which Spike replies, "Hey, wait a minute.")
The Crimean War was nearly thirty years before William expresses his love to Cecily. So, if Halfrek was a vengeance demon during the Crimean War, she couldn't possibly be Cecily.
Dawn was bitten by a vampire at the start of the episode and didn't become a vampire.