Casting news for an upcoming episode of Angel. Warning, major spoiler ahead!

Juliet Landau, who played Dick Van Dyke sound-alike vampire Drusilla in Buffy the Vampire Slayer, will return to the Whedon universe for an episode of Angel.

Destiny will feature flashback scenes to the 19th Century, where we are reintroduced to Dru and given a glimpse of just why Angel and Spike hate each other so.

"It's always fun to visit London 1880," Landau told the Zap2it web site. "I have some different wardrobe that's really gorgeous. I'm always excited to go back and work, and this is a particularly fun episode, because I'm back with the boys."

Destiny airs in the US on 19th November.