David Boreanaz had just had knee surgery when shooting began. As a consequence Angel spends most of the episode sitting or lying down.
On the Commentary, David Boreanaz says of directing the scene between James Marsters and Christian Kane, "What's great about working with actors that are so passionate about what they do, is that you really get raw power out of them. In this scene, I really wanted to capture the rawness of these two characters. And James and Christian really brought that to the table. I let them do their thing. They know what they're doing, basically; and as long as their energy's up, and they're real internal with their passion, it really shows at the end, here. I think that if I can get under their veins and really pump what I want to get out of them, that I've achieved something, as far as the story's concerned. They definitely did their job in this scene."
In In the Dark (1999), Spike met the real Doyle when he visited Los Angeles to retrieve the Gem of Amara, but never actually learned his name, allowing Lindsey's ruse to work.