The halls are alive with the moans of zombies.

Connor, blaming himself as the cause of the Beast's arrival, confronts Lilah in her office at Wolfram and Hart, but before he can learn any information, the law firm is attacked by the Beast. Connor is knocked into a pillar and trapped under rubble, and the injured Lilah is only rescued by Wesley.

Returning to the hotel, Wesley tells Angel what has happened, and the gang head back to Wolfram and Hart to rescue Connor. Although they quickly find him, when the gang try to leave, they are beset by hordes of zombie lawyers.

Remembering a previous visit, Angel leads an escape via the White Room, but they arrive to find the Beast sucking a black fog of energy from the strange little girl. As she dies, she transports them back to the hotel.

Quiz - ten quick questions.

Trivia: The White Room and the strange girl who lives there were first encountered by Angel in the season three episode Forgiving.

Poor old Gavin Park finally bows out in this episode, killed by the beast, then turned into a zombie. Rather pathetically, his last word was "Hi!" Actor Daniel Dae Kim has since gone on to appear in the second season of 24.

The idea of zombies originated in Caribbean folklore, with Haiti being a particular centre of the belief. They've been a big favourite in horror movies since the thirties, with some of the best movie treatments being George Romero's Living Dead trilogy, Peter Jackson's 1992 gore-comedy Braindead, and, most recently, Danny Boyle's Twenty-Eight Days Later.

For more on movie zombies, take a look at the BBCi Films site's History of zombies in the movies.