The rain during the fight scene, was actually scripted, but cut because of the budget. However when they went to go film that scene it started raining anyway.
Producer Kelly A. Manners has said this is his favorite episode from Angel.
The song playing in the club is "Living Dead Girl" by Rob Zombie.
During Wesley's torture scene, Dushku actually says "British Channel" which is incorrect. It's been dubbed in post to "English Channel" which is correct.