The serie "Angel"

In a city overpopulated by demons, warlocks and some really nasty lawyers, a creature of the night becomes Los Angeles greatest hope. Once a vicious vampire who terrorised Europe, vampire-with-a-soul Angel helps the helpless in order to get his reward from the Powers that Be - to be forgotten, and regain his humanity. In his quest, he sets up Angel Investigations, with the help of an unlikely (and quite effective) evil-fighting team: wannabe actress Cordelia Chase, bookish Brit Wesley Whyndham-Price and streetfighter Charles Gunn. Theme song: "Angel Theme" by Darling Violetta